usb device
 

gooday to all.

how can i safely unplug a usb device in linux?
and how to determine if my usb port is usb2?
thanks...

try command:

#lspci

it will print out information about your hardware

i think you can safetly unpluge your usb device if you unmount it

if you are talking about usb storage device..here's how i configured mine

#modprobe usb-storage
#cd /mnt
#mkdir /usbstick

add to fstab:
/dev/sda1 /mnt/usbstick vfat user,noauto,umask=0 0 0

kde: make device shortcut on you desktop with path set to /dev/sda1
(right click on icon has a saftly umount)