Pm6300a: USB interface, support 4, 8 or 5-wire touch screen
Pm6500a: USB interface & RS232 interface, support 4, 8 or 5-wire touch screen
Pm6202b: USB interface & RS232 interface, support 4 or 5-wire touch screen
Pm9026bh: RS232 interface, support 4, 8-wire touch screen
Pm9036ch: RS232 interface, support 4, 8 or 5-wire touch screen