Compaq XL280 - Manual (Page 28)

4 P IN A SSIGNMENTS P RESARIO N OTEBOOK M AINTENANCE AND S ERVICE G UIDE 1800 S ERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Game Port Connector
Note: the game port connector is available only on the optional QuikDock device.
Serial Connector
Pin Signal Pin Signal
1 +5V 9 +5V
2 SWA 10 SWC
3 RBTA 11 RBTC
4 GND 12 RMSO
5 GND 13 RBTD
6 RBTB 14 SWD
7 SWB 15 RMSI
8 +5V
Pin Signal Pin Signal
1 Carrier Detect 6 Data Set Ready
2 Receive Data 7 Ready to Send
3 Transmit Data 8 Clear to Send
4 Data Terminal Ready 9 Ring Indicator
5 Signal Ground 5 Signal Ground