Slooooow USB key speeds
mike at cchtml.com
Thu Jan 29 00:32:04 UTC 2009
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 at 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
> 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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