$ udevadm info /sys/class/input/event2
P: /devices/pci0000:00/0000:00:1a.1/usb2/2-2/2-2:1.0/0003:0EEF:0001.0001/input/input2/event2
N: input/event2
S: input/by-id/usb-eGalax_Inc._USB_TouchController-event-mouse
S: input/by-path/pci-0000:00:1a.1-usb-0:2:1.0-event-mouse
E: DEVLINKS=/dev/input/by-id/usb-eGalax_Inc._USB_TouchController-event-mouse /dev/input/by-path/pci-0000:00:1a.1-usb-0:2:1.0-event-mouse
E: DEVNAME=/dev/input/event2
E: DEVPATH=/devices/pci0000:00/0000:00:1a.1/usb2/2-2/2-2:1.0/0003:0EEF:0001.0001/input/input2/event2
E: ID_BUS=usb
E: ID_INPUT=1
E: ID_INPUT_TABLET=1
E: ID_MODEL=USB_TouchController
E: ID_MODEL_ENC=USB\x20TouchController
E: ID_MODEL_ID=0001
E: ID_PATH=pci-0000:00:1a.1-usb-0:2:1.0
E: ID_PATH_TAG=pci-0000_00_1a_1-usb-0_2_1_0
E: ID_REVISION=0100
E: ID_SERIAL=eGalax_Inc._USB_TouchController
E: ID_TYPE=hid
E: ID_USB_DRIVER=usbhid
E: ID_USB_INTERFACES=:030000:
E: ID_USB_INTERFACE_NUM=00
E: ID_VENDOR=eGalax_Inc.
E: ID_VENDOR_ENC=eGalax\x20Inc.
E: ID_VENDOR_ID=0eef
E: LIBINPUT_DEVICE_GROUP=3/eef/1/210:usb-0000:00:1a.1-2
E: MAJOR=13
E: MINOR=66
E: SUBSYSTEM=input
E: USEC_INITIALIZED=21157905

$ udevadm info /sys/class/input/event1
P: /devices/pci0000:00/0000:00:1a.1/usb2/2-2/2-2:1.0/0003:0EEF:0001.0001/input/input1/event1
N: input/event1
S: input/by-id/usb-eGalax_Inc._USB_TouchController-event-mouse
S: input/by-path/pci-0000:00:1a.1-usb-0:2:1.0-event-mouse
E: DEVLINKS=/dev/input/by-path/pci-0000:00:1a.1-usb-0:2:1.0-event-mouse /dev/input/by-id/usb-eGalax_Inc._USB_TouchController-event-mouse
E: DEVNAME=/dev/input/event1
E: DEVPATH=/devices/pci0000:00/0000:00:1a.1/usb2/2-2/2-2:1.0/0003:0EEF:0001.0001/input/input1/event1
E: ID_BUS=usb
E: ID_INPUT=1
E: ID_INPUT_MOUSE=1
E: ID_MODEL=USB_TouchController
E: ID_MODEL_ENC=USB\x20TouchController
E: ID_MODEL_ID=0001
E: ID_PATH=pci-0000:00:1a.1-usb-0:2:1.0
E: ID_PATH_TAG=pci-0000_00_1a_1-usb-0_2_1_0
E: ID_REVISION=0100
E: ID_SERIAL=eGalax_Inc._USB_TouchController
E: ID_TYPE=hid
E: ID_USB_DRIVER=usbhid
E: ID_USB_INTERFACES=:030000:
E: ID_USB_INTERFACE_NUM=00
E: ID_VENDOR=eGalax_Inc.
E: ID_VENDOR_ENC=eGalax\x20Inc.
E: ID_VENDOR_ID=0eef
E: LIBINPUT_DEVICE_GROUP=3/eef/1/210:usb-0000:00:1a.1-2
E: MAJOR=13
E: MINOR=65
E: SUBSYSTEM=input
E: USEC_INITIALIZED=21153673