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Submitted by bose2009 on Tue, 07/14/2009 - 5:29pm

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Sometimes you have to let go

Submitted by tehR0XX0Rz on Sun, 07/05/2009 - 5:56am

Sometimes you have to let go of the past.

Twenty-five bucks buys you a little card with four USB 2.0 ports, so what's the big deal if your 2.0 stuff doesn't fit in the 3.0 ports?

I won't buy a new mobo until USB 3.0 is in the market.

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Sometimes you have to let go

Submitted by tehR0XX0Rz on Sun, 07/05/2009 - 5:57am

oops -- double-posted

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USB 3.0 is compatible with 2.0

Submitted by boldgamer02 on Sat, 07/04/2009 - 2:05am

USB 3.0 is backwards compatible with prior USB versions. You would just need to use the old cabling. When using the old cabling you will be limited to USB 2.0 speeds (even when using a 3.0 device).

 http://tiny.cc/MaximumPCArticle

 http://tiny.cc/CdefS

 http://tiny.cc/FromMindshare 

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USB 3 changing formfactor?

Submitted by Quertior on Sat, 07/04/2009 - 12:12am

Say it ain't so!

If I remember correctly from MaxPC's "100 greatest PC innovations of all time" (or something like that) article, they cited USB as number one for reasons including "shrewdly [keeping] the same formfactor" and therefore retaining compatibility between USB 2 and 1. If USB 3 isn't compatible with 2 or 1, I will seriously consider either waiting years to adopt, or not adopting at all, the new technology. 

----- 

There are 10 types of people in this world: those who understand binary, those who don't, and those who mistake it for ternary.

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But which OS will support USB3 first?

Submitted by Slugbait on Fri, 07/03/2009 - 2:08pm

Looks like Linux is the winner: http://www.atomicmpc.com.au/News/147645,linux-first-os-to-support-usb-30.aspx.

An MS spokesperson very recently confirmed to the Seattle Times that it won't be supported on Win7 at launch: http://seattletimes.nwsource.com/html/technologybrierdudleysblog/2009407954_usb_30_coming_later_this_year.html. "They'll consider it down the road", which could mean SP1...or if you remember USB 1.0, maybe not until NT7.

It might be supported in Vista with another SP or update, but what MS sez in November doesn't necessarily apply seven months later. No indication I could find if it will be supported with an update for XP, but my money sez no.

Got a Mac? Not in Snow Leopard for now, either.

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Yes.

Submitted by bloodyserb on Fri, 07/03/2009 - 1:31pm

From the USB3.0 faq: http://www.lvr.com/usb3faq.htm#co_cables

Can I use USB 2.0 cables with a SuperSpeed
host or device?

Yes, but communications will use a slower speed. A USB 3.0 cable contains
both SuperSpeed and USB 2.0 wires. USB 2.0 cables fit USB 3.0 receptacles
and carry USB 2.0 traffic only.'

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2.0 vs 3.0

Submitted by UpsideDownPants on Fri, 07/03/2009 - 1:31pm

A new major feature is the SuperSpeed bus, which provides a fourth
transfer mode at 5 Gbit/s. The raw throughput is 500 MByte/s, and the
specification considers it reasonable to achieve 400 MByte/s or more
after protocol overhead.

When operating in SuperSpeed mode, full-duplex
signaling occurs over 2 differential pairs separate from the
non-SuperSpeed differential pair. This results in USB 3.0 cables
containing 2 wires for power and ground, 2 wires for non-SuperSpeed
data, and 4 wires for SuperSpeed data, and a shield (not required in
previous specifications).

To accommodate the additional pins for SuperSpeed mode, the physical
form factors for USB 3.0 plugs and receptacles have been modified from
those used in previous versions. Standard-A cables have extended heads
where the SuperSpeed connectors extend beyond and slightly above the
legacy connectors. Similarly, the Standard-A receptacle is deeper to
accept these new connectors. A legacy Standard-A cable will operate as
intended and will never interact with the SuperSpeed connectors,
ensuring backward compatibility. The Standard-B modifications could not
be made as elegantly; the SuperSpeed connectors had to be placed on top
of the existing form factor, making legacy Standard-B plugs workable on
SuperSpeed Standard-B receptacles, but not vice versa.

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The usb 3 connector looks

Submitted by thegamepro on Fri, 07/03/2009 - 12:12pm

The usb 3 connector looks bigger than the current one.  Will usb 3 be cross-compatible with usb 2?

 

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