dmesg
ums0: Cypress Semiconductor mouse, rev 1.00/0.00, addr 4, iclass 3/1 
ums0: 3 buttons and Z dir. 

usbdev -v
Controller /dev/usb0: 
addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), Intel(0x0000), rev 1.00 
 port 1 addr 2: full speed, power 90 mA, config 1, Generic USB Hub(0x0068), Chicony(0x0472), rev 1.\
00 
  port 1 addr 3: full speed, self powered, config 1, PFU-68 USB Keyboard(0x0068), Chicony(0x0472), \
rev 1.00 
  port 2 powered 
  port 3 addr 4: low speed, power 100 mA, config 1, mouse(0x0001), Cypress Semiconductor(0x04b4), r\
ev 0.00 
 port 2 powered