Microphone connector
Pin Signal
Tip
Input
Ring
+5 V
Base
Ground
Headphone Connector
Pin Signal
Tip
Left channel audio
Ring
Right channel audio
Base
Ground
Parallel Connector
Pin Signal I/O Pin Signal I/O
1 STROBE# I/O 14 ATUO FC XT# O
2 Data bit 0 I/O 15 Error# I
3 Data bit 1 I/O 16 INIT# O
4 Data bit 2 I/O 17 SLCT IN# O
5 Data bit 3 I/O 18 Ground
6 Data bit 4 I/O 19 Ground
7 Data bit 5 I/O 20 Ground
8 Data bit 6 I/O 21 Ground
9 Data bit 7 I/O 22 Ground
10 ACK# I 23 Ground
11 Busy I 24 Ground
12 PE I 25 Ground
13 SLCT
External Diskette Drive Connector
SurePOS 500 Model XX3 Technical Reference, v 1.3 Page 52 of
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