NEC SP B-Series - Manual (Page 108)

Connector Pin Assignments B-7
Keyboard and Mouse Connectors
The keyboard and mouse use standard PS/2 connectors. Pin assignments are
given in the following table.
Keyboard and Mouse Connector Pin Assignments
Pin Keyboard Connector Mouse Connector
1 Keyboard Data Mouse Data
2 No connection No connection
3 Ground Ground
4 +5V (fused) +5V (fused)
5 Keyboard Clock Mouse Clock
6 No connection No connection
Front Panel
The front panel connector provides cabling for the buttons and panel LEDs
(power and hard disk). The connector pin assignments are given in the following
table.
Front Panel Connector Pin Assignments
Pin Signal Pin Signal
1 HD_PWR 10 FPSLP
2 HDR_BLNK_GRN 11 IRRX
3 HAD 12 GND
4 HDR_BLNK_YEL 13 GND
5 GND 14 N/C
6 FPBUT_IN 15 IRTX
7 FP_RESET 16 IR_PWR
8 GND 17 N/C
9 +5V 18 N/C