213.5 PS/2 Mouse / KeyboardPOS-566/566L provides two PS/2 Mouse connectors.• CN37 : 5-pin Header PS/2 Mouse ConnectorPIN NO. DESCRIPTION1 MS DATA2 N/C3 GND4 +5V5 MS CLK• CN1 : 6-pin Mini-DIN PS/2 Mouse/Keyboard ConnectorPIN NO. DESCRIPTION1 KB DATA2 MS DATA3 GND4 +5V5 KB CLOCK6 MS CLOCK• CN12 : 5-pin Header Extended Keyboard ConnectorPIN NO. DESCRIPTION1 KB CLOCK2 KB DATA3 N/C4 GND5 +5V