[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Am I getting USB 2.0 speed?



On Wed, 24 Aug 2005, Bruno Buys wrote:
>    I'm trying to figure out whether my mp3 player and pen drive is 
> being handled as a USB 2.0, with proper speed, under Debian Sarge.

lsusb. If it shows it is hooked to the EHCI usb bus (cat /proc/interrupts
can help you with this in new kernels), it is USB 2.0.  Otherwise, it is USB
1.1 (either because someone lied in their specs, or bad USB cabling).

That *still* won't give you USB 2.0 speeds. I have never seen a !@#!@$
pen-drive or mp3-player that did more than lie on that regard, they all
operate at ~10Mbit/s maximum, and that's for the very good ones.  It is just
operating in USB 2.0 mode, but in 12Mbit/s speed (which is not a bad thing,
if the flash device inside isn't faster than that anyway...).

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh



Reply to: