[paldo@virgin:~]$ cat /proc/bus/input/devices
I: Bus=0019 Vendor=0000 Product=0002 Version=0000
N: Name="Power Button (FF)"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/virtual/input/input0
U: Uniq=
H: Handlers=kbd event0 
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button (CM)"
P: Phys=PNP0C0C/button/input0
S: Sysfs=/devices/virtual/input/input1
U: Uniq=
H: Handlers=kbd event1 
B: EV=3
B: KEY=100000 0 0 0

I: Bus=0003 Vendor=046d Product=c517 Version=0110
N: Name="Logitech USB Receiver"
P: Phys=usb-0000:00:07.2-2/input0
S: Sysfs=/devices/pci0000:00/0000:00:07.2/usb1/1-2/1-2:1.0/input/input2
U: Uniq=
H: Handlers=kbd event2 
B: EV=120003
B: KEY=10000 7 ff800000 7ff febeffdf ffefffff ffffffff fffffffe
B: LED=1f

I: Bus=0003 Vendor=046d Product=c517 Version=0110
N: Name="Logitech USB Receiver"
P: Phys=usb-0000:00:07.2-2/input1
S: Sysfs=/devices/pci0000:00/0000:00:07.2/usb1/1-2/1-2:1.1/input/input3
U: Uniq=
H: Handlers=kbd mouse0 event3 
B: EV=f
B: KEY=7fff 4ac332f bf084444 0 0 ff0001 1f84 8a37cc00 667bfa dd71dfed 9e0000 0 0 0
B: REL=1c3
B: ABS=1 0