Everything You Need to Know About USB 3.0, Plus First Spliced Cable Photos
Posted 08/18/08 at 11:45:00 AM by Norman Chan
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No doubt you’re familiar with the Universal Serial Bus – we ranked it as our top PC innovation of all time. But what do you know about the next version of this ubiquitous interface? USB 2.0 (otherwise known as USB Hi-Speed) boosted the original 12Mbps data rate to 480Mmb/s over eight years ago, and now USB 3.0 (dubbed USB Superspeed) is set to multiply that bandwidth tenfold. Intel released the Extensible Host Controller Interface to hardware partners last week after some reported disputes with AMD and Nvidia (who, afraid Intel would have a jump start in incorporating the tech in chipsets, threatened to develop their own USB standard). But how does this affect you? We dug up some new information about USB 3.0, got our hands on the new connectors, and even took a look inside the new cables.
(Edit made to clarify xHCI release)
USB 3.0 will be backwards-compatible with USB 2.0
Like the upgrade from USB 1.1 to 2.0, the new 3.0 connectors and cables will be physically and functionally compatible with hardware from the older specs. Of course, you won’t be able to maximize your bandwidth unless you’re using a USB 3.0 cable with Superspeed devices and ports, but at least plugging a 3.0 cable into a 2.0 port won’t blow up your PC. The spec’s compatibility lies in the design of the new connectors. USB 2.0 cables worked off of four lines – a pair for in/out data transfer, one line for power, and the last for grounding. USB 3.0 adds five new lines (the cable is noticeably thicker), but the new contacts sit parallel to the old ones on a different plane, as opposed to being adjacent to them. This means you’ll be able to differentiate between 2.0 and 3.0 cables just by looking at the ends.
At first glance, the USB 3.0 connector looks just like the 2.0 design
The maximum speed of USB 3.0 is 4.8Gbps
It’s true: USB 3.0 SuperSpeed will be 10 times faster than the 480Mbps limit of the 2.0 spec. The example Intel likes to give out when talking about the new speed is that transferring a 27GB HD movie to your future media player will only take 70 seconds with USB 3.0, while it would take 15 minutes or more with 2.0. Keep in mind that you’re only going to be able to take advantage of this speed if your portable storage device can write data that quickly. Solid state devices will benefit most from the speed boost, while magnetic hard disks will be limited by their RPM and corresponding read/write speeds. Also, new Mass Storage Device drivers will have to be developed for Windows to take advantage of the spec.
The USB 3.0 A and B-side connectors
Uploads and downloads are kept on separate data lanes
Remember those five new lanes we mentioned earlier? With USB 3.0, two new lanes will be dedicated to transmit data, while another pair will handle receiving data. This not only accounts for the significant speed boost, but also allows USB 3.0 to both read and write at the same time from your portable storage device. In the old spec, the pair of lanes used for data transfer weren’t split between send and receive – they only could handle traffic in one direction. Bi-directional data transfer will be very useful for syncing up information on PDAs and storage backup.
The packed guts of a USB 3.0 cable -- note that the cable will be about as thick as a ethernet cable
USB 3.0 will charge more devices, quicker
Not only will USB 3.0 cables facilitate faster transfer speeds, but they’ll carry more power, too. The USB-IF recognizes the growing number of portable devices that charge via USB (cellphones, MP3 players, digital cameras), and have bumped the power output from about 100miliamps to 900 milliamps. That means not only will you be able to power more than 4 devices from a single hub, but the increase current will let you charge up heftier hardware as well.
USB 3.0 will be more power efficient
One of the mandates of the new spec is more efficient power-usage protocols. USB 3.0 abandons device polling in favor of a new interrupt-driven protocol, which means non-active or idle devices (which aren’t being charged by the USB port) won’t have their power drained by the host controller as it looks for active data traffic. Instead, the devices will send the host a signal to begin data transfer. This feature will also be backward compatible with USB 2.0 certified devices.
A look at the mini connector that'll connect to cell-phones and other portable devices
The spec that Intel released mid-last week is only 90% complete. Ravencraft says that they expect the spec to be finalized by Q4 of this year. Hardware partners are expected to have USB 3.0 controllers designed by mid 2009, and consumers won't see the first end products utilizing the spec until early 2010 (though a late Holiday 2009 push for new products isn't out of the question).
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"Power is one of the big
Submitted by daveyd on Sat, 01/10/2009 - 2:55pm
"Power is one of the big concerns for Wireless USB, since no one (not
even Tesla!) has figured out a practical way to transmit power
wirelessly."I beg to differ, check out this device that can power a device without a direct cable connection.
http://www.pwrmat.com/technology.htm
Submitted by adeletwo6789 on Tue, 09/29/2009 - 11:06am
I have a Presario CQ50 - 108EO with Vista Home. Want to install XP-Pro,
but can't get it to work. Have read about this and I know that it is
possible,
ignoring anyone who uses the
Submitted by jrocknyc on Sat, 08/01/2009 - 8:31pm
ignoring anyone who uses the phrase "i beg to differ" has always been an effective policy.
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Welcome slashdot.
What a crappy connector…
Submitted by ranron on Tue, 08/19/2008 - 1:35pm
Ever since USB came out people have been unhappy with the rectangular plug--with 3.0 at least make it so it will only fit in one direction!
I'm going to have to stay with Firewire.
---
Ran
Confusing Rectangle...
Submitted by AntiHero on Wed, 10/01/2008 - 10:54am
Agreed, the rectangular connector blows. I always get confused, and fumble around shoving the cable into place finally, in frustration. I am an IT Support guy, and being unfamiliar with the computer can be annoying, since some the usb fits the backwards way to your home computer, depending on the maker. I also hate ps2 ports, since it's not always 100% clear how it fits. Firewire is a good port, also the PSU cables are simple enough to do with your eyes closed. (a lot of the time i can't see the back of a computer when i plug stuff in, so i go by touch.
Submitted by doggitydogs on Thu, 08/21/2008 - 6:52am
It does only fit in one direction. That's what the rectangle inside the rectangle is for.
Submitted by AntiHero on Wed, 10/01/2008 - 1:53pm
Yeah, you're right but if you can't see where you're plugging it into (say the back of a pc, and you can't unplug a bunch of stuff since it's all running and there aren't ports on the front, you'd be amazed at how often this happens.) then fumbling with the standard usb cord is a pain.
Your right it's amazing how
Submitted by Keith E. Whisman on Thu, 10/02/2008 - 12:43am
Your right it's amazing how hard it is to insert a usb cable or even a USB thumb drive for Vista ReadyBoost in the ports in the back of the PC without pulling the computer away from the wall and actually getting on my hands and knees and snaking my head behind the PC so I can see. It's harder than you might think and I have to agree about the damn PS2 ports as well.
Sometime that PS2 key in the plug is orriented to the right and others to the left and yet others up and others down. There needs to be a standard.
And why are PS2 ports color coded and labled for Keyboard and mouse? I've switched the ports around and found it doesn't matter what PS2 port you put you mouse and keyboard in. It works regardless. Makes no sense. So I take it that regardless of the labels the PS2 ports are universal for keyboard or mouse.
Submitted by Keith E. Whisman on Tue, 08/19/2008 - 12:36am
Hey now look here USB kicks ass. It is one cable and one connector that allows me to attach my keyboard, my mouse, my external hard drive, my thumb drive, my joystick, my gamepad, my Ipod, my cell phone and my Printer to my computer. It's just one cable type and one type of connector for all these things. Back in the day I needed a Printer port for my printer with one of three cables, I needed a special large round 9pin keyboard connector to connect my keyboard to my computer, I needed a serial port for my mouse and a com port for my modem and a game port for my game pad and joystick. My external hard drive used either an External SCSI port or a printer port or some other port. What I'm getting at is that USB has made the home pc a true multi media all in one machine. Back in the day I had to disable my sound card just to use my printer because the printer used the same interupt as the sound card. It was a mess back befor USB brought order and ballance to the force.
So USB is not so much crap after all. It is old now and needs to be updated or replaced but when it came out and was actually fully realised it really made the PC alot more easier to use and enjoy. Look at all the peripherals that are out there now. USB and the Plug and Play standard have revolutionized the PC experience and therefore you had better respect it damnit. Now Damnit respect it now.
Submitted by allaun on Mon, 08/18/2008 - 9:45pm
Talk about flawed realtiy here. Ok, first off, eSata is not in any shape, way or form related to usb in either standards or speed. Thats like trying to say OH WOW! My zip drive is soo much faster then my floppy drive. Second off, just how much kool-aid have you people been drinking lately? Seriously, USB is a flawed standard at best. At worst is a cheap marketing ploy. You will NEVER reach any advertised speeds. Look at what is stated as its maximum then scale it to about 30% of that. Even then thats being optimistic. USB is a host based architecture. Meaning your proccessor does all the calculations for its devices, instead of the device doing it. Which translates into both craptacular performance and sub par usability. You want true speed, go firewire. Otherwise don't complain when that "nifty" usb 3.0 camera doesn't even begin to approach the speeds it claims.
Submitted by Inx on Fri, 01/09/2009 - 6:48am
They probably compared eSATA to USB b/c many external HDD's have one or both types of ports. Like it or not, firewire+USB both compete against eSATA for market-share, when it comes to many devices and the choice of which of these 3 types of port(s) to incorporate.
Your figure of 33% (real-world vs. nominal speed) is not "optimistic" for USB 2.0... many USB devices reach 50% of USB 2.0's nominal speed and that's where it starts getting "optimistic". And, USB is anywhere from only 16% slower than firewire 1394a, to a significant 70% slower, depending on whether reading or writing, and whether using lots of small files or vice-versa (www.usb-ware.com/firewire-vs-usb.htm" mce_href="http://www.usb-ware.com/firewire-vs-usb.htm) so depending
on what your primary uses are, firewire can be as little as 16% more
"craptacular" than USB...but yes, it has significant speed advantages
over usb SOME of the time... but even that does not negate the reasons
I give below for why firewire sucks despite its speed advantage.Gigabit ethernet is widely known to reach only 33%-66% of its stated speed (wikipedia's article links to real-world testing). The internal speed of most SATA HDD's is also 1/3 or less of the "nominal" speed. So USB 2.0 is not alone in having real-world performance that much slower than their "nominal" performance.
So long as people inform themselves of real-world instead of "nominal" perfomance, there's no "flawed reality": Even once informed that Firewire is faster, the reasons NOT to use firewire are too compelling. The reason I personally don't use firewire is this:
the only firewire flash-drives I've ever seen are $100 for a pitiful 2GB... and for larger capacities than a flash-drive --namely external HDD's-- I do find faster file-transfers to be VERY necessary, so I use eSATA b/c both firewire and USB are slower than many external HDD's (and even 800mbps firewire is slower than eSATA...and costs way more)... I can't find any cellphones that use firewire... I have no reason to look for firewire ports on a MoBo or any other hardware, until peripheral manufacturers and Apple itself give me a reason.
Firewire is like Apple got a great caterer, best champagne, and great band for a party... i.e. in and of itself, it has potential to rock, and it puts USB 2.0 to shame... but the problem is that firewire's party is LAME cos Apple forgot to (a) invite everyone to the "party" (get manufacturers to make devices that can slide into their "party"... First they scared off consumers with too many reliability issues that Apple took too long to fix, and they scared vendors (peripheral-makers) off with hard-to-control RFI issues, and they allowed Sony+others to make iLink devices which didn't work on most Wintel PC's, only Apple: this confused and alienated consumers even further than the hardware breaking. They've had some success with SCSI, at least, but that's still far from what they need to steal the show back from USB 2.0-3.0).
(b) then they charged too much for "admission"
and (c) the timing for their "party" was all wrong (they scheduled it in the city that was hosting the "superbowl" on the same date as the "superbowl" --and didn't provide a big-screen TV-- and their timing was such that people went to USB 2.0's "superbowl" party and drank beer instead of firewire's "champange" ...cos at least USB 2.0 has EVERYTHING like flash-drives [akin to having "big-screen TV's"] ;-) , and at reasonable prices). Or let's just say...
Apple needs to get others in the computer industry behind them (or failing that, produce firewire peripherals themselves) and do it for competitive prices: give people more performance for the same cost, otherwise they won't gain back market-share from a virtual-monopoly like USB; they blew it and failed to do this with firewire-800 (1394b), and thereby made many people fail to forgive-and-forget that their early versions of firewire-400 ports BLEW UP and supprted so few devices. When you consider all of the above:
It's amazing that Apple is still even bothering to invest in the design+manufacture of faster firewire ports, without securing widespread industry support that can manufacture more peripherals to fit INTO those oh-so-superior -- yet oh-so-useless -- 800/1600/3200 firewire ports. ("useless" cos an 800mbps port that goes unfilled...that's like a battleship that never leaves the harbor.) "If you build it, they (owners of non-Apple PC's) WON'T come" ...not when so few peripherals are manufactured to FILL the firewire ports.
Submitted by ReggieM1 on Mon, 02/23/2009 - 4:02pm
Inx,
You are obviously not a musician or videographer. However, the sad truth is, as much as you're right about Apple messing some things up, upwards of 95% of any and every piece of audio and video equipment worth anything relies either mostly or solely on firewire. Yeah, you can get a crappy low-end USB audio device to record a couple of tracks, but you can bet anything that it's going to choke up after about 8-10 tracks and a couple of effects on most computers, even recent ones with pretty good specs. As much as I love ProTools, I would never buy a USB Digidesign Mbox because most computers I've dealt with can't seem to handle any real amount of A/D conversion, processing, and D/A conversion via USB simultaneously. The standard USB Mbox costs about $450 new, and a comparable firewire interface is in the same price range or a little less.
In terms of your distaste of firewire, you might get your wish - Apple appears to be in the process of phasing out firewire, as they removed it from their lower end laptops. The funny thing is, Apple has really marketed its optimization of Apogee interfaces and Logic Pro to musicians. In the music world, Apogee (next to Digidesign) is probably the most popular manufacturer of more ultra high-end quality audio interfaces, and every one of their current models are firewire or PCIe-based - the two interfaces that Apple pushes are firewire only. I am a long time Mac user, but this kind of stupidity and gross negligence on Apple's part is a huge kick in the face of all a/v professionals that have supported them during the period when Apple was really stuggling. At one time, Apple had only about 10% of the total market, but Macs were still far superior to Windows machines for music and graphics, and it was people like myself that kept their heads afloat. Trust me, I'm not scolding you for having a problem with Apple, but you definitely shouldn't have any love for Microsoft and their nickel and dime to death licensing policies either - what you don't pay for the machine, you very quickly make up for in Microsoft's much more expensive operating system and can't do without basic functional software (which Apple either includes free or makes available at a fraction of the cost, by the way). However, if Apple keeps pissing people off, they're going to become exclusively a manufacturer of iPods and iPhones, which wouldn't surprise me because that appears to be all they care about these days anyway.
All corporate bashing aside, my real point is that just that you have to try and see things from the point of view of all the people out there that have invested so much money into quality, useful a/v equipment that relies on this wonderfully-designed, poorly-marketed thing called firewire. You've really pointed out how useless it is to your needs, and your utter rejection of it seems to stem from your inherent dislike toward Apple. I think it sucks that they own it, because too many people in both the Mac and PC world rely on it. I am all for USB 3.0 and/or standardization if it proves to be capable of being an actual replacement for firewire. I don't see that happening though, even with all the advances. The really sad thing is, there will be people out there with, in some cases, tens of thousands of dollars worth of unusable equipment if firewire disappears completely. And unlike computers, which are basically worthless as soon as you buy them, this equipment does not really get obsoleted at nearly the dizzying rate that computers do. Pretty much all semi-professional and higher 3CCD camcorders that someone would actually use to do something novel like make a living rely completely on firewire to transfer info to your computer - either that or spend many thousands of dollars on proprietary video editing equipment. A Sony VX2100 was the standard professional wedding videographer camcorder 5 years ago, and it still is today - it cost about $2700 then, and it still costs about $2200 or more. Apple says get a new camera, but that's making an awful assumption that everybody has a typical camcorder that is full of cool acronyms and inflated numerical specs, but lacking in true professional quality. SSD video is nice and neat and convenient, but tapes really do rule in terms of quality, even in HD, and firewire is the only good way to extract that amount of info into a computer in real time at this point.
Think of what a horrible waste it would be for all the musicians and videographers out there that have such a large investment in good, still useful equipment if firewire goes away altogether. Progress is great, but there can't be a lapse in functionality and availability of things that meet people's basic needs for true progress to take place. USB is great for mice, keyboards, printers, and other things that standard computer users facilitate on a regular basis, but for all the bigger throughput-heavy stuff, USB really just doesn't cut it, and I have serious doubts that it ever will. I love all the things that USB is great at and the fact that it is a convenient standard connection, but I dread the day that I get stuck with USB and nothing better.
Submitted by jtroll on Mon, 08/18/2008 - 3:34pm
I like the sound of this, to put it mildly. It can't come soon enough.
Submitted by xalseqsn on Mon, 08/18/2008 - 12:25pm
Both quintuple and x10 are correct, depending on how you want to phrase it.
The spec's bit-rate is 5x faster, but "doubles" that increase by moving from half-duplex to full-duplex, for a total of 10x *bandwidth* -- used IF and only if the device needs bi-directional maximum data transfers. Which most devices don't, so you'll SEE a slightly greater than 5x bandwidth increase from the bit-rate and handshaking-latency-eliminating-full-duplex change. But not 10x in most devices.
Waiting Game
Submitted by brostbeef on Mon, 08/18/2008 - 9:19am
Has there been any information when we might be able to see USB 3.0 support come to MOBOs?
I'm currently waiting for Core i7 chips so I have a socket that will last, but I'm wondering how long until USB 3.0.
Anyone have any news/opinions regarding this?
"Hardware partners are
Submitted by sirphunkee on Mon, 08/18/2008 - 10:18am
"Hardware partners are expected to have USB 3.0 controllers designed by mid 2009, and consumers won't see the first end products utilizing the spec until early 2010 (though a late Holiday 2009 push for new products isn't out of the question)."
Submitted by nduanetesh on Mon, 08/18/2008 - 5:58am
Hey Norm,
In the first paragraph you say USB 3.0 will quintuple the bandwidth of USB 2, but in the third paragraph you say that USB 3.0 will offer a ten-fold increase over the bandwidth of the last data spec. So...I'm guessing the "quintuple" was wrong?
Very good info, though. I've been wondering what was up with USB 3.0 and you've laid out all of the fundamental info very well. Does it look like either of the wireless USB standards are ready to take off?
Sweet.
Submitted by Talcum X on Mon, 08/18/2008 - 5:44am
By the time I'm able to upgrade, it should be mainstream in current Mobos. I wonder how it's speed compares to eSata? Most modern BIOS's support USB bootable devices, this could give the eSata a run for it's money.
***********
Every morning is the dawn of a new error.
Submitted by trh70 on Mon, 08/18/2008 - 12:19pm
You got that right, eSata is going to take a back step here. Im looking foward to this coming out.
forget eSATA... doesn't this
Submitted by johnny3144 on Mon, 08/18/2008 - 3:31pm
forget eSATA... doesn't this kinda mean this will be faster than SATA? if so... who will use SATA to connect HDD(SSD) anymore?
does this mean SATA will become history?
Submitted by dRock1286 on Mon, 08/18/2008 - 8:06pm
http://www.maximumpc.com/article/news/with_sata_6gbs_specification_coming_sataio_provides_naming_guidance
I don't think that SATA has anything to worry about right now...but if USB keeps increasing its bandwith faster than SATA, then yes. It might go the way of the slot processor...
Submitted by Keith E. Whisman on Tue, 08/19/2008 - 12:50am
Well serial ATA is completely controlled by the chipset. While USB requires a chunk of processor time for each device plugged in. With a single core processor populate all of your usb ports with devices like cameras and your CPU will really start to lag as it communicates with each device. SATA communicates with the chipset and memory and utilyzes very little cpu resources even when all SATA ports are populated.
So SATA will always be a great way to connect your hdd's and cdroms to your pc.
Submitted by Inx on Fri, 01/09/2009 - 4:33am
Amounts of CPU time eSATA vs. USB vs. firewire each require:
http://www.engadget.com/2008/11/19/kangurus-new-e-flash-thumbdrive-marries-esata-and-usb/
or http://eshop.macsales.com/NewsRoom/Framework.cfm?page=articles/article_extre_hdmerc.html
...just samples from 2 sources.
Submitted by tomgreen on Tue, 03/24/2009 - 7:47am
I understand the arguments that FireWire and such is faster, but you have to remember that USB is largely used by mainstream consumers for things other than storage. Cheap flash drives, for instance. You can't put a firewire chip in there. Also, charging devices like my bluetooth headset - FW is overkill. USB is more about doing a wide assortment of things, not raw speed or the best transfer protocols or CPU usage.
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