How to find mt fastest USB port?

mibadt · 2013-03-08 08:27:06

Sorry, although this isn't exactly related, I hope this group is the closest to the subject!
I use an Arch/LXDE based network to sync (using rsync) photos between an external USB card reader and an external USB hard drive.
The manual of the netbook states that all three USB ports are USB2, yet, from the output of the lsusb (below), it seems only one of the ports is indeed USB version 2 (and the rest are 1.1..).

1. Am I right?
2. If Y, how can I find the fastest port?

Thanks

-----------copy of lsusb-------------

Bus 001 Device 003: ID 064e:a127 Suyin Corp. 
Bus 001 Device 004: ID 0bda:8189 Realtek Semiconductor Corp. RTL8187B Wireless 802.11g 54Mbps Network Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

------------------

mich41 · 2013-03-08 08:30:03

By bus numbers. As you can see, this WiFi adapter is currently connected to USB 2.0 bus.

By moving it to other ports you'll quickly find out that every one of them is the fastest one.

mibadt · 2013-03-08 08:39:14

Thanks,
Any tips how do I move the wireless adapter to a different bus?

mich41 · 2013-03-08 09:07:47

rmmod ehci_hcd

This will disable USB2 and attach the dongle to one of these USB1 controllers. Provided that it supports USB1 - many devices are USB2-only.

Last edited by mich41 (2013-03-08 09:10:28)

brebs · 2013-03-08 10:35:15

This one-liner shows the USB speed (12 or 480).

mibadt · 2013-03-08 10:36:13

Thanks !

Arch Linux

#1 2013-03-08 08:27:06

How to find mt fastest USB port?

#2 2013-03-08 08:30:03

Re: How to find mt fastest USB port?

#3 2013-03-08 08:39:14

Re: How to find mt fastest USB port?

#4 2013-03-08 09:07:47

Re: How to find mt fastest USB port?

#5 2013-03-08 10:35:15

Re: How to find mt fastest USB port?

#6 2013-03-08 10:36:13

Re: How to find mt fastest USB port?

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