/usr/share/libwacom/serial-wacf004.tablet is in libwacom-common 0.8-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | [Device]
Name=Wacom Serial Tablet WACf004
DeviceMatch=serial:0000:0000
Class=ISDV4
IntegratedIn=Display;System
[Features]
Stylus=true
Ring=false
Buttons=0
|