F u l l-s i z e CPU Card F S B - 8 6 0 BChapter 2 Quick Installation Guide 2 - 102.11 Front Panel Connector (FP2)Pin Signal Pin Signal1 External Speaker (+) 2 Keyboard Lock (+)3 N.C. 4 GND5 Internal Buzzer (-)Default6 I2C Bus SMB Clock7 External Speaker (-)Default8 I2C Bus SMB Data* Internal Buzzer enable: Close Pin 5, 72.12 RS -232 Serial Port Connector (COM 1)Pin Signal Pin Signal1 DCD 2 RXD3 TXD 4 DTR5 GND 6 DSR7 RTS 8 CTS9 RI 10 N.C.2.13 RS -232/422/485 Serial Port Connector (COM 2)Pin Signal Pin Signal1 DCD(422TXD-/485DATA-)2 RXD (422RXD+)3 TXD(422TXD+/485DATA+)4 DTR (422RXD-)5 GND 6 DSR
