HP A7818-IE002 - Manual (Page 116)

Hardware Components
Rear Panel Connectors
Chapter 5 116
MIDI/Joystick Connector
External Audio Jacks
The Line In jack, Line Out jack, and Mic In jack on the rear panel are standard
connectors.
MIDI/Joystick Connector
Pin Signal Pin Signal
8 +5 V
9 +5 V 7 A-2
10 B-1 6 A-Y
11 B-X 5 Ground
12 MIDI-OUT 4 Ground
13 B-Y 3 A-X
14 B-2 2 A-1
15 MIDI-IN 1 +5 V
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
4