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Re: Slooooow USB key speeds



Rick Stevens wrote:
A lot of machines have several USB controllers--some USB 1.1 and some
USB 2.0.  If you happen to plug the key into one of the 1.1 ports, it'll
be quite a bit slower than the 2.0 ports.

Plug the key into one of your ports, then do "lsusb".  In that listing,
you'll see lines with "Device: 001".  Those are the "hubs" and they'll
tell you if it's a V1.1 or V2.0 bus.

You should also see your key.  If it's on a V1.1 bus, try moving it to
another port to get it on a V2.0 bus.  For example, here's one of mine:

[root bigdog ~]# lsusb
Bus 001 Device 002: ID 2040:6513 Hauppauge WinTV HVR-980
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 413c:3200 Dell Computer Corp. MouseBus 001 Device 001:
Bus 002 Device 003: ID 413c:2105 Dell Computer Corp.
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Note that that device "Bus 001 Device 001" is a 2.0 hub, "Bus 002 Device 001" is a 1.1 hub. You'll also notice that my USB TV tuner card is on
bus 001 (the 2.0 bus), and my keyboard and mouse are on bus 002 (the 1.1
bus).

Also note that all three devices are plugged into the back of my
machine.  The two USB ports next to the PCI bus slots are the 1.1 ports,
while the ports next to my sound card jacks are the 2.0 ports.  The two
ports on the front panel (connected to the mobo by a cable) also seem
to be 2.0 ports (bus 001).

Your lsusb output is not telling you what you think. Any new computer, and especially the P5Q-E the OP is using, have all 2.0 ports. The mixture days are over.

OP, I have a P5Q Deluxe running several USB flash drives at full 2.0 speeds. I'd make sure your BIOS USB setting is set to "HiSpeed" and not "FullSpeed." Isn't that wording wonderful?


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