cat /proc/bus/input/handlers N: Number=0 Name=rfkill
N: Number=1 Name=kbd
N: Number=2 Name=sysrq (filter)
N: Number=3 Name=mousedev Minor=32
N: Number=4 Name=evdev Minor=64
N: Number=5 Name=joydev Minor=0

cat /proc/bus/input/devices | grep 04f2 -A 12

I: Bus=0003 Vendor=04f2 Product=1013 Version=0111
N: Name="Chicony USB Wireless HID Receiver"
P: Phys=usb-0000:00:14.0-2/input0
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2:1.0/input/input17
U: Uniq=
H: Handlers=sysrq kbd event14
B: PROP=0
B: EV=120013
B: KEY=1000000000007 ff9f207ac14057ff febeffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0003 Vendor=04f2 Product=1013 Version=0111
N: Name="Chicony USB Wireless HID Receiver"
P: Phys=usb-0000:00:14.0-2/input1
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-2/3-2:1.1/input/input18
U: Uniq=
H: Handlers=kbd mouse1 event15 js0
B: PROP=0
B: EV=1f
B: KEY=4c37fff072ff32d bf54445600000000 c00000000070001 20f908b17c000 677bfad951dfed 9ed68000004400 10000002
B: REL=43
B: ABS=ffffff01000701ff
B: MSC=10

ll /dev/input/by-id/lrwxrwxrwx 1 root root  9 Jun  9 08:42 usb-046a_0011-event-kbd -> ../event4
lrwxrwxrwx 1 root root 10 Jun  9 11:53 usb-Chicony_USB_Wireless_HID_Receiver-event-kbd -> ../event14
lrwxrwxrwx 1 root root 10 Jun  9 11:53 usb-Chicony_USB_Wireless_HID_Receiver-if01-event-mouse -> ../event15
lrwxrwxrwx 1 root root  6 Jun  9 11:53 usb-Chicony_USB_Wireless_HID_Receiver-if01-mouse -> ../js0
lrwxrwxrwx 1 root root  9 Jun  9 08:42 usb-Logitech_USB_Optical_Mouse-event-mouse -> ../event3
lrwxrwxrwx 1 root root  9 Jun  9 08:42 usb-Logitech_USB_Optical_Mouse-mouse -> ../mouse0