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1 HP Vectra 500 Series
System Overview
Rear Panel Connectors
The external connectors on the rear panel of the computer are used to
connect the mouse, keyboard and display. The 25-pin parallel port can be
used for connecting a parallel printer, while the two 9-pin buffered serial
ports are for serial printers. The following diagram shows the rear panel
connectors for the minitower and desktop computers.
Display Connector
6 - Ground
Red - 1
11 - Not Used
7 - Ground
Green - 2
12 - Data from display (DDC1)
8 - Ground
Blue - 3
13 - H-Sync
9 - Not Used
Not Used - 4
14 - V-Sync
10 - Ground
Ground - 5
15 - Not Used
Power Key - 6
+5V dc - 4
Not Used - 2
Keyboard Socket (upper)
Mouse Socket (lower)
24
5 - Clock
3 - Ground
1 - Data
Serial Device Connectors
1- CF (DCD)
2- BB (RD)
3- BA (TD)
4- CD (DTR)
5- AB (GND)
Strobe - 1
14 - AUTO FD
DO - 2
15 - ERROR
D1 - 3
16 - INIT
D2 - 4
17 - SLIN
D3 - 5
18 - Ground
D4 - 6
19 - Ground
D5 - 7
20 - Ground
D6 - 8
21 - Ground
D7 - 9
22 - Ground
ACK -10
23 - Ground
BUSY -11
24 - Ground
PE -12
25 - Ground
SLCT -13
Parallel Device Connector
(DSR) CC - 6
(RTS) CA - 7
(CTS) CB - 8
(RI) CE - 9
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