Compaq N1020V - Manual (Page 190)

Connector Pin Assignments
Maintenance and Service Guide A–3
Table A-4
S-Video
Pin Signal Pin Signal
1 Ground (Y) 3 Y-Luminance (Intensity)
2 Ground (C) 4 C-Chrominance (Color)
Table A-5
External Keyboard/Mouse
Pin Signal Pin Signal
1 Keyboard/mouse DATA 4 +5 VDC
2 Keyboard/mouse DATA 5 Keyboard/mouse CLK
3 Ground 6 Keyboard/mouse CLK