I wrote an Intuos Pro M (2017) config for hawku's driver, paste it into your tablet.cfg if you want to use it, enjoy~
You'll need a somewhat-recent version of hawku's driver to use this, it won't work in driver versions before CTL-4100 support was added
#
# Wacom PTH-660 (USB interface)
# (Bluetooth interface for this tablet is on 0x0360)
#
Tablet 0x056A 0x0357 0xFF0D 0x0001
Name "Wacom PTH-660"
ReportId 0x10
ReportLength 192
DetectMask 0x40
MaxX 44800
MaxY 29600
MaxPressure 8191
Width 226.0
Height 150.0
InitFeature 0x02 0x02
Type Wacom4100
#
# Wacom PTH-660 (USB interface) (Wacom drivers installed)
#
Tablet 0x056A 0x0357 0xFF00 0x000A
Name "Wacom PTH-660 (Wacom drivers installed)"
ReportId 0x10
ReportLength 193
DetectMask 0x40
MaxX 44800
MaxY 29600
MaxPressure 8191
Width 226.0
Height 150.0
Type Wacom4100
You'll need a somewhat-recent version of hawku's driver to use this, it won't work in driver versions before CTL-4100 support was added
#
# Wacom PTH-660 (USB interface)
# (Bluetooth interface for this tablet is on 0x0360)
#
Tablet 0x056A 0x0357 0xFF0D 0x0001
Name "Wacom PTH-660"
ReportId 0x10
ReportLength 192
DetectMask 0x40
MaxX 44800
MaxY 29600
MaxPressure 8191
Width 226.0
Height 150.0
InitFeature 0x02 0x02
Type Wacom4100
#
# Wacom PTH-660 (USB interface) (Wacom drivers installed)
#
Tablet 0x056A 0x0357 0xFF00 0x000A
Name "Wacom PTH-660 (Wacom drivers installed)"
ReportId 0x10
ReportLength 193
DetectMask 0x40
MaxX 44800
MaxY 29600
MaxPressure 8191
Width 226.0
Height 150.0
Type Wacom4100