messages
ums0: Fujitsu Takamisawa Component Apple Optical USB Mouse, rev 1.10/1.05, addr 3, iclass 3/1
ums0: 1 buttons
ums_attach: sc=0xc22ffc00
ums_attach: X   8/8
ums_attach: Y   16/8
ums_attach: B1  0/1
ums_attach: size=3, id=0
usbdevs -v
  port 2 addr 3: low speed, power 100 mA, config 1, Apple Optical USB Mouse(0x0302), Fujitsu Takamisawa Component(0x05ac), rev 0x0105