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Linux Computer in USB Key Form-Factor

CmdrTaco posted more than 6 years ago | from the put-that-in-yer-pipe-and-smoke-it dept.

149

PMBjornerud writes "A start-up located in the French Alps near Grenoble is readying a tiny ARM-based Linux single-board computer (SBC) in a USB key form-factor. Calao's USB-9260 USB key-sized SBC measures 3.3 x 1.4 inches (85 x 36 mm). It is based on an Atmel AT91SAM9260 processor, an SoC (system-on-chip) powered by an ARM926EJ-S core clocked at 190MHz. The SoC targets "advanced applications such as GPS application processors," according to Atmel. Here is a Spec sheet PDF. With a 10/100 Ethernet port, firewall usage springs to mind. Other interfaces are 2 USB host ports and room for an expansion card. Which should allow some creative uses. "

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149 comments

imagine (5, Funny)

trollercoaster (250101) | more than 6 years ago | (#19664205)

a beowulf cluster of these!

Re:imagine (4, Funny)

Penguinisto (415985) | more than 6 years ago | (#19664319)

a beowulf cluster of these!

...that's actually easy to do: you could fit a Beowulf cluster of 'em in a shoebox (or better yet, convert an old ATX case to hold a couple dozen or so).

/P

Re:imagine (0)

Anonymous Coward | more than 6 years ago | (#19666573)

Imagine a beowolf cluster of those shoe boxes..
Would that be US UK or EURO sized?

Re:imagine (5, Funny)

SQLGuru (980662) | more than 6 years ago | (#19664539)

Why isn't there a Grindel cluster or Grindel OS or something for all of these Beowulf clusters?

Layne

Re:imagine (5, Funny)

dbIII (701233) | more than 6 years ago | (#19664975)

Why isn't there a Grindel cluster ... Beowulf

It would be missing an ARM.

Re:imagine (1)

sedman (210394) | more than 6 years ago | (#19665463)

Because Grindel was the villain and would therefor need to run windows...And who would want the hassle of setting that up?

Re:imagine (3, Informative)

stoolpigeon (454276) | more than 6 years ago | (#19666551)

Grindel? Is this a localization thing? I have never heard of Grindel - Grendel, but not Grindel.

a couple things I wonder (1)

MoxFulder (159829) | more than 6 years ago | (#19664767)

(a) How much will it cost? If it's cheap, I want one!!!
(b) This is darn similar to the recently announced Yoggie Pico [linuxdevices.com] , which is only $40--though the Pico doesn't have USB host capability or ethernet (but could probably be hacked to provide such :-))

Re:a couple things I wonder (2, Informative)

OrangeTide (124937) | more than 6 years ago | (#19665379)

How is it $40? "The Yoggie Pico is available now, priced at $180 with a year's subscription to updates, according to the company. Subscriptions will cost $30/year thereafter."

Re:a couple things I wonder (1)

MoxFulder (159829) | more than 6 years ago | (#19665809)

My bad, I've no idea where I got that price from.

On the other hand, when I want a cheap and versatile embedded system, I just get a wireless router! I bought a discontinued model of NETGEAR wireless router with 32 MiB of SDRAM, 16 MiB of flash, USB 2.0, and a 200 MHz MIPS processor for about $30. Lots of fun to play around with!!

Firewall (1)

Ant P. (974313) | more than 6 years ago | (#19664217)

Should be a bit more useful than the Windows-only USB "firewall" dongle that was posted here a while back.

Re:Firewall (3, Interesting)

tigerc (628630) | more than 6 years ago | (#19664377)

I think the only advantage of this particular linux usb key is it's size. Otheriwse, the gumstix are a helluva lot more powerful and almost as small (think size of a gumstick). Anyway, gumstix also has a variety of expansion boards. I'm waiting for the gsm module so I can make something off the OpenMoko platform or a cobbled together iPhone.

Re:Firewall (3, Interesting)

Anonymous Coward | more than 6 years ago | (#19664465)

The Gumstix may have a higher clock, but they use the XScale microarchitectrue. The 926 is the same architecture, but the microarchitecture has superior performance, particularly with regard to memory access. I'd be interested to see real world benchmarks between the devices.

Re:Firewall (2, Informative)

owlstead (636356) | more than 6 years ago | (#19667021)

It seems this one is quite a bit smaller as well. Furthermore, it has 256 MB flash instead of max 16 for the gumstix I saw. Then again, you can easily upgrade the memory of the gumstix using SD or compact flash. And the gumstix seem to have more options. Of course, it depends on the price as well. The gumstix seem to be pretty sweetly priced, we'll just have to wait for the prices of these.

Re:Firewall (1)

charlesnw (843045) | more than 6 years ago | (#19664499)

Um. Cobbled together iPhone? I am not aware that gumstix makes touch screens. Or are you planning to add one on via the expansion capabilities and some sort of custom case? If so that sounds like a very interesting project.

Re:Firewall (3, Interesting)

Andy Dodd (701) | more than 6 years ago | (#19666051)

Yeah, except that all gumstix products put Ethernet on a daughterboard using a Hirose connector that's a complete non-starter in a severe high-vibration environment.

This thing still uses an RJ45 connector which means it still can't be used in such a severe environment in its off-the-shelf form, but it's much easier to desolder a connector and solder a jumper cable to something like a MIL-C-38999 and pot the whole thing in epoxy than try to ruggedize those Hirose connectors (hopeless).

Re:Firewall (5, Interesting)

ringfinger (629332) | more than 6 years ago | (#19664445)

This seems like the ultimate in upgradable technology -- just unplug an old one and plug in a new one. Put this in a car as the on-board computer, then you could pull it out and plug it into another machine to perform diagnostics or upgrade software. This seems extremely useful to me.

Fireball. (0)

Anonymous Coward | more than 6 years ago | (#19665935)

"Put this in a car as the on-board computer"

Just as long as it doesn't control anything important.

But does it.. (4, Funny)

mulvane (692631) | more than 6 years ago | (#19664223)

Run Windows Vista?

Re:But does it.. (-1, Offtopic)

Anonymous Coward | more than 6 years ago | (#19664259)

Does the pope shit in the woods?

Honestly... (4, Funny)

AltGrendel (175092) | more than 6 years ago | (#19664305)

...I'm not sure anything could.

Re:Honestly... (3, Funny)

laejoh (648921) | more than 6 years ago | (#19665919)

The simple truth is that interstellar distances will not fit into the human imagination.

The simple truth is that a computer capable of running Windows Vista will not fit into the human imagination.

There, I fixed it for you :)

Swiss Army Key? (1)

Aqua_boy17 (962670) | more than 6 years ago | (#19665481)

Never mind what OS it runs. What I want to know is if it will include a bottle opener and corkscrew.

A man's gotta have his priorities.

More Realistically (1)

B1ackDragon (543470) | more than 6 years ago | (#19665817)

I'm afraid I don't know much about small form factor computers, so bear with me on this one...

Does anyone know if I'd be able to connect a USB hard drive and a USB soundcard and run musicpd [musicpd.org] on it? I just had to replace my MPD box with a big, ugly, old, but 10 dollar, dell. I really wouldn't mind a small quiet solution.

Re:More Realistically (1)

jmorris42 (1458) | more than 6 years ago | (#19667147)

> Does anyone know if I'd be able to connect a USB hard drive and a USB soundcard and run musicpd on it?

Probabaly not. Yes it has the plugs to connect a USB hdd and a USB sound device, and yes you could get power in through the USB plug fairly easy. But this device is clocked a wee bit slow (and has no FPU) to make OGG or FLAC playback very likely. Don't know about AAC. MP3 would probably be good to go though.

You need to climb the power curve just a wee bit. Go take a look at what gumstix.com has to offer. They can set you up wuth a wee little thing that clocks at up to 600Mhz and can attach a stereo audio output directly. It still doesn't have floating point but at up to 600Mhz and enough ram to waste on optimization out the wazoo you can probably power your way through OGG/FLAC/AAC anyway.

Although I do like the idea of this new device. Just need to think of a job it can handle.

Which should allow some creative uses. (-1, Troll)

3p1ph4ny (835701) | more than 6 years ago | (#19664265)

Which creative uses would those be? Apparently sentence fragments aren't understandable, whoda thunk?

In Soviet Amerika: (0)

Anonymous Coward | more than 6 years ago | (#19664333)



Form-Factor Keys Linux Computer in USB Key.

OBLIG: Imagine a beowolf... (3, Funny)

martyb (196687) | more than 6 years ago | (#19664351)

Just imagine a beowolf cluster of these... Seriously!

The SBC had TWO usb host slots into which TWO of these could be plugged (back-to-back) and EACH of these could have TWO more! And so on and so on. Sure there'd be power considerations (duh).

So, more realistically, plug a multiport USB hub into your PC, and plug one of these into each of the ports... instant cluster!

Yes, I know, there's probably has no _practical_ use like this (190 MHz; 64MB SDRAM), but just for the geekiness of it, I'd love to see someone DO it!

Re:OBLIG: Imagine a beowolf... (3, Informative)

mabhatter654 (561290) | more than 6 years ago | (#19664469)

It's like a tidied up Gumstix. For small computers those guys rule the market right now. All the power of a WinCE or Palm in a tiny little board. They are missing USB hosting and video for the complete package. But they have Bluetooth and robot servo control... kinda makes up for it.

Re:OBLIG: Imagine a beowolf... (1)

iamdrscience (541136) | more than 6 years ago | (#19665219)

Gumstix now has a PXA270 based board that has USB host. As far as video, I think the best you could probably do is either a USB video device (assuming you can get a driver working) or the onboard LCD controller (which is picky to say the least because LCDs are evil).

Re:OBLIG: Imagine a beowolf... (2, Insightful)

iabervon (1971) | more than 6 years ago | (#19664887)

Unfortunately for that idea, it's too wide to plug two into adjacent ports on a hub and too tall to plug into adjacent ports on a computer. They need to offer a version with a mini-USB socket for the device end before you can make a cluster of these.

Re:OBLIG: Imagine a beowolf... (4, Interesting)

caseih (160668) | more than 6 years ago | (#19665059)

I disagree. I presume the device can run with only power (ie standalone). If so, and if it was cheap enough, stick one of these inside a Linksys WRT54GL case, attach it to an ethernet port, and you have a very nice parental filter dansguardian box. The Linksys itself isn't powerful enough to run dansguardian (not enough ram), but this device has sufficient ram. Or it could be used to augment the capabilities of linksys itself, like to do a PBX, or something.

Re:OBLIG: Imagine a beowolf... (1)

chuckymonkey (1059244) | more than 6 years ago | (#19666453)

I'm not all that familiar with dansguardian, but have you tried to mount a remote file system into DD-WRT and install the software in that? I've done this so that I can have the router access data on my computer, but haven't done it yet to run any applications.

Re:OBLIG: Imagine a beowolf... (1)

Casca (4032) | more than 6 years ago | (#19666687)

Or just plug a USB wireless adapter into it and chuck the linksys...

network analysis tool? (4, Interesting)

apodyopsis (1048476) | more than 6 years ago | (#19664495)

With Ethernet on one end, USB2 on the other and stacks of ARM9 power?

I bet that security researchers turn it into some kind of network analysis tool before I can say "whippit".

And then the hackers get their hands on it.....

I bet your there are waaay more uses for a sexy little gizmo like this then the manufacturers realize.

Re:network analysis tool? (2, Interesting)

FauxReal (653820) | more than 6 years ago | (#19666583)

I'd like to see one with ethernet jacks on both ends... then it could be an inline analysis tool.

Re:network analysis tool? (1)

LWATCDR (28044) | more than 6 years ago | (#19666729)

It has Two USB host ports so you could add two USB Network adapters to it.
Or you could put a USB network adapter and a USB wifi adapter.
Or you could put a USB network adapter and USB bluetooth adapter.
Or you cuuld put a USB network adapter and a USB drive for logging.
Yep you could use it as an inline analysis tool with no problem.

but does it run... (2, Interesting)

saleenS281 (859657) | more than 6 years ago | (#19664517)

Opensolaris? No... seriously, does it?

Re:but does it run... (2, Informative)

zergl (841491) | more than 6 years ago | (#19664803)

Assuming your question was seriously serious:

I can't see how it does, considering there's no Opensolaris for ARM that I know of.

Re:but does it run... (1)

saleenS281 (859657) | more than 6 years ago | (#19664951)

ahh, didn't see the ARM, I thought it was powerPC based. There are rumblings of an ARM port in the future, but you are correct in that it has not been done yet.

Coming soon (2, Interesting)

pestilence669 (823950) | more than 6 years ago | (#19664551)

These guys have inherited the old BlackDog & K9 platforms. Rather than ARM, it uses a PowerPC core. New models coming soon:
http://echoidentity.com/ [echoidentity.com]

Re:Coming soon (1)

OrangeTide (124937) | more than 6 years ago | (#19665417)

I rather like my BlackDog box. It took a bit of effort to get it to work reliably on Ubuntu, but it works on Windows like a champ. I still haven't gotten it to work on a Mac though.

beowulf posters take note (5, Funny)

Anonymous Coward | more than 6 years ago | (#19664583)

There is a right way, and a wrong way to do a beowulf post.

First of all, you do not put the word "imagine", or "beowulf" in the subject line. Your subject line MUST pertain directly to the subject at hand. In this case, the subject is a USB key computer that runs LINUX. It is also important to use the word "these" instead of the word "those".

I have taken the opportunity to display a properly formatted beowulf post, conveniently reproduced below:

Subject: USB Key form factor computer

Imagine a beowulf cluster of these!

USB Key form factor computer (1, Informative)

Anonymous Coward | more than 6 years ago | (#19664705)

Imagine a beowulf cluster of these!

Re:USB Key form factor computer (0)

Anonymous Coward | more than 6 years ago | (#19666469)

Good boy.
Here, take a biscuit.

Israeli companies have been making them for years (5, Informative)

Organic User (1103717) | more than 6 years ago | (#19664587)

Many Israeli companies have been making computer-on-a-stick for quiet a while now. For example, Yoggie [yoggie.com] has been making some running linux to be used for security applications. I pick up a regular computer-on-a-stick for about $40USD 3 years ago in Tel Aviv.

Re:Israeli companies have been making them for yea (0)

Anonymous Coward | more than 6 years ago | (#19664765)

Linked here [slashdot.org] a few weeks ago...

Where (1)

HWguy (147772) | more than 6 years ago | (#19664885)

Hey Organic User, where did you find them in Tel Aviv? I have friends who live there and I would love to find some embedded linux platforms for less than what gumstix charges.

Re:Israeli companies have been making them for yea (1)

BosstonesOwn (794949) | more than 6 years ago | (#19665695)

The cheapest on the site is $180. I don't see cheaper yet.

If this thing has a usb connection , they will have my money. I will buy at least 4. Plug them into a usb hub and run the usb cord to a rs232 serial adapter and I have myself an easy little terminal server , with enough pop to help me upgrade firmware from across the country. And no need to buy a sun ILOM equipped box.

firewall? duh? (4, Funny)

Wakko Warner (324) | more than 6 years ago | (#19664685)

"With a 10/100 Ethernet port, firewall usage springs to mind."

Maybe if you're retarded. How effective is a 190 MHz computer with a single 10/100 interface?

Re:firewall? duh? (1, Informative)

Anonymous Coward | more than 6 years ago | (#19664793)

I'd imagine it would be possible to make it at least desktop firewall by using the USB ports to connect the device to a workstation; making the device more of a USB network card with an integrated firewall.

Re:firewall? duh? (1)

another_fanboy (987962) | more than 6 years ago | (#19664821)

If you connect a few together through usb you would have more ethernet ports. Also, you could use it as a usb network adapter with a built-in firewall.

Re:firewall? duh? (1)

spectro (80839) | more than 6 years ago | (#19664829)

easy, put vmware server or xen on it and add several virtual network cards... oh wait

Google for "one nic nat" (1)

ahfoo (223186) | more than 6 years ago | (#19664875)

It can be done. Good luck doing rule based routing with tk though.

Anyhow, I was checking this out when it came out on Linux Devices the other day and it's intriguing but it's still more of an embedded device and they don't give you much access to the IO without an additional module that sort of detracts from the small form factor sexiness. I'd like to see something like a DIY Arduino type board based on the chip though.

Re:firewall? 802.11q. (1)

DocSavage64109 (799754) | more than 6 years ago | (#19665375)

Assuming your switch supports it, you could use 802.11q packet tagging and vlans.

Re:firewall? 802.11q. (1)

psmears (629712) | more than 6 years ago | (#19666475)

Assuming your switch supports it, you could use 802.11q packet tagging and vlans.
Got there before me! Though I think you mean 802.1Q. Someone else suggested connecting this thing to a Linksys WRT54G* router as a "network processor". The switch built into the WRT units supports 802.1Q, so the single ethernet interface would not be a problem.

Re:firewall? duh? (0)

Anonymous Coward | more than 6 years ago | (#19665949)

You could build a beowulf cluster of these and build a multi-port firewall...

Re:firewall? duh? (1)

TheRaven64 (641858) | more than 6 years ago | (#19666305)

Use Ethernet over USB, so the device is used like a USB network card, sitting between you and the network, perhaps?

Re:firewall? duh? (1)

smaddox (928261) | more than 6 years ago | (#19666345)

Exactly what I was thinking. However, if you use the USB ports you could daisy chain these, allowing as many connections as you would like. Unfortunately, the total throughput would be limited to 480 Mbit/s.

The first application I though of would be for unobtrusive debugging/profiling, without the need for a whole separate computer (great for laptop use). The data gathering software could be fairly easily written to run on the dongle.

Other than that, diagnostics and security are the only applications I can think of.

Hardhack? (3, Funny)

Telvin_3d (855514) | more than 6 years ago | (#19664777)

After seeing this and a few other things tagged with 'hardhack' I decided to find out just what a 'hardhack' is. Turns out that it's a shrub http://en.wikipedia.org/wiki/Hardhack [wikipedia.org] . Who knew?

Re:Hardhack? (4, Funny)

Dial-Up (842218) | more than 6 years ago | (#19666579)

Psh. How hard could a shrub be to hack? It's a kind of dirty, but with a little digging, you can easily get root.

A few more (less legal) appliactions come to mind (5, Insightful)

Opportunist (166417) | more than 6 years ago | (#19664931)

Let's see. A computer that can easily be hidden inside your pocket. With a network interface.

All you need now is a UPS uniform and a target.

That's right, a Linux computer in a USB drive (3, Insightful)

suitepotato (863945) | more than 6 years ago | (#19665509)

and all you need to use it is another computer to plug it into. (insert giant rolling eyes emoticon here) The Linux world still isn't getting it... Here's your chance to start working on the other stuff like the projection keyboard, 3D sensor for hand movements and gestures, voice recognition, and heads-up displays. Wait, that's all hardware techie stuff and works with Windows as well as Linux. Which means in the next ten years we'll be getting /. stories about how Windows (Whatever) based pocket computers with all of the above are now being made to run Linux.

Re:That's right, a Linux computer in a USB drive (2, Informative)

iggymanz (596061) | more than 6 years ago | (#19666139)

Linux is already being used in tons of embedded and monitor/control applications, what are you talking about?

Re:That's right, a Linux computer in a USB drive (1)

owlstead (636356) | more than 6 years ago | (#19666743)

"and all you need to use it is another computer to plug it into."

Or a router with USB, hell, a television set with USB. You could probably also use the USB port just to power the device. So then you would have a mini PC with a network interface.

nice office ! (1)

BokLM (550487) | more than 6 years ago | (#19665665)

At least, the picture of their office is nice !

I'd like to be able to see a mountain like that when looking at the window.

Re:nice office ! (1)

veganboyjosh (896761) | more than 6 years ago | (#19666533)

I'd like to be able to see a mountain like that when looking at the window.

Hey, you can! you just need one of these. [luxuryhousingtrends.com]

Re:nice office ! (0)

Anonymous Coward | more than 6 years ago | (#19666691)

Window? You get a window?! At work?!!

Are you hiring?

How about as a USB network? (1)

lrohrer (147725) | more than 6 years ago | (#19665875)

With both a host and client USB port would not this device work as a bridge between two USB hosts? How about a Quick and dirty USB network?

The other thought is to attach it to a portable (cheap) picture viewer that reads a usb flash drive, and download "newspaper" like material... I need something to read PDF's on the go.

Read pdfs was : Re:How about as a USB network? (1)

Memetic (306131) | more than 6 years ago | (#19667033)

I need something to read PDF's on the go.
Hey if you added wifi,a GSM/GPRS/3G modem, a keyboard, a bettery a screen you could make it connect to the internet, make phone calls and stuff as well as be pdf viewer!

Oh wait a minute, that's been done.

How much though. (1)

jshriverWVU (810740) | more than 6 years ago | (#19665939)

I've been wanting to buy an SBC for some time now, but they are very high. Why buy and SBC when I can get a microATX for a lot cheaper and still be somewhat small.

mod u+p (-1, Troll)

Anonymous Coward | more than 6 years ago | (#19665943)

[slashdot.orG], words, don't^ get

A Linux Computer on a bootable USB disk? (1)

Insipid Trunculance (526362) | more than 6 years ago | (#19666025)

Is it possible to have a computer on a 2 GB USB key?I move a lot and i dont want to carry a laptop for my personal use. The main reason i want a usb computer is to use the internet and avoid having to carry /remember a load of logins/Passwords and have my browser set just so.I wondered if i could have something like ubuntu's live CD but with my tweaks and modifications.

So the questions i have are this:

Do most modern BIOS support USB booting?

Is it possible to fit one on a key that size?

Which Linux should i install?

Re:A Linux Computer on a bootable USB disk? (4, Interesting)

Ungrounded Lightning (62228) | more than 6 years ago | (#19666201)

Saw one at a trade show a couple years back - using one of the dime-sized disks for memory.

Appears as a drive to the system and launches a full-screen window displaying its own X server's screen buffer when plugged in (to a Windows, BSD, or Linux box).

Has enough power storage in a capacitor to automatically save state when suddenly unplugged - so you can just pull it out, take it somewhere else, plug it into another box (perhaps with a different underlying op system), and pick up right where you left off (cursor position, keystroke, and all).

Was intended to be licensed to manufacturers and to sell for $100 for kids to carry between school, library, and home. I think they eventually got a model to market for $125 with a flash drive.

Don't recall the name right now (a somewhat simian word) but there have been a number of stories about it on Slashdot.

The one in THIS article isn't it. Doesn't seem to have any mass storage onboard.

Re:A Linux Computer on a bootable USB disk? (1)

BungaDunga (801391) | more than 6 years ago | (#19666279)

http://puppylinux.com/ [puppylinux.com]

Teeny tiny, will fit on a 128mb key.

I don't know what percentage of computers will boot USB drives. You can convince most any computer to boot from a floppy, and puppy linux has a floppy image you can use that'll make it boot off usb.

Alternatively you can just burn a multisession CD-R of Puppy, make your changes and Puppy will burn them as a new track. Very cool option, but you need to be at a computer with a burner to save. A CD will fill up eventually, as you can't actually delete anything unless it's a CD-RW. Well, you can delete things so they don't show up, but they're still there on previous tracks.

Re:A Linux Computer on a bootable USB disk? (1)

TheRaven64 (641858) | more than 6 years ago | (#19666371)

Why not just put a VM image on a USB keychain? You can get 8GB USB drives pretty cheaply now, which is enough for a reasonable OS install. Reserve 1GB for suspend state, and just suspend the VM on one machine and resume it on the other.

Another option is to use something like Knoppix with the union mount stuff, so you boot from the Knoppix DVD and then just store the deltas on the USB drive, although this will save less state between migrations.

absolutely (1)

mckwant (65143) | more than 6 years ago | (#19667095)

check out damnsmalllinux. You can set a single usb memory stick to both boot off the stick or run (in emulation) in either Linux or Windows. You can customize it to run all sorts of packages. Running in emulation isn't speedy, but it gets the job done (eventually).

It's pretty sweet.

This isn't new (0)

Anonymous Coward | more than 6 years ago | (#19666365)

Any one ever heard of gumstix? http://www.gumstix.com

For... research... (0)

Anonymous Coward | more than 6 years ago | (#19666383)

Pre-load this with a rootkit, seeing as how the average computer user don't know more than where to find the Internet Explorer icon and have to call tech support to create a folder this means that all your little logs and upgrades to your rootkit have a safe haven to process any data that it captures and can store it temporarily until it is ready to zip out through the internet connection, it will also survive a reformat.

But then again... you could just install the software manually, since you are doing this as research on computers that you have the right to do this on... right?

Something like this would truly ROCK in: (1)

NeuroManson (214835) | more than 6 years ago | (#19667153)

A Beowulf cluster! Seriously, set it up to communicate over the USB-2 protocol, then just plug it into a hub with as many of these as you can. Then that's plugged into a hub, that's set up the same way, and so on and so forth. Low cooling costs, and you could hypothetically build one in a standard desktop case with room to spare.
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"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>
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