This mouse has four buttons and a roller. The roller movement is recognized as the Z axis motion.
To use this mouse as the PS/2 device and the OS supports PS/2 mouse initialization:
Protocol "NetScrollPS/2" Device "/dev/xxxx" (where xxxx is the PS/2 mouse device)
To use this mouse as the PS/2 device but the OS does not support PS/2 mouse initialization (the roller and the fourth button won't work):
Protocol "PS/2" Device "/dev/xxxx" (where xxxx is the PS/2 mouse device)
To use this mouse as the PS/2 device and the OS supports automatic PS/2 mouse detection:
Protocol "Auto" Device "/dev/xxxx" (where xxxx is the PS/2 mouse device)