24
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.
Parallel Device Connector
Serial Device Connectors
Keyboard Socket (upper)
Mouse Socket (lower)
Display Connector
5 - Clock
1 - Data
Not Used - 2
+5V dc - 4
Power Key - 6
3 - Ground
Strobe - 1
DO - 2
D1 - 3
D2 - 4
D3 - 5
D4 - 6
D5 - 7
D6 - 8
D7 - 9
ACK -10
BUSY -11
PE -12
SLCT -13
14 - AUTO FD
15 - ERROR
16 - INIT
17 - SLIN
18 - Ground
19 - Ground
20 - Ground
21 - Ground
22 - Ground
23 - Ground
24 - Ground
25 - Ground
6 - Ground
7 - Ground
8 - Ground
10 - Ground
9 - Not Used
11 - Not Used
13 - H-Sync
14 - V-Sync
12 - Data from display (DDC1)
15 - Not Used
Red - 1
Green - 2
Blue - 3
Not Used - 4
Ground - 5
(DSR) CC - 6
(RTS) CA - 7
(CTS) CB - 8
(RI) CE - 9
2- BB (RD)
3- BA (TD)
4- CD (DTR)
5- AB (GND)
1- CF (DCD)
Summary of Contents for 520 5/XX
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