HP 525 5/XX, 520 5/XX manual Rear Panel Connectors, Display Connector, Parallel Device Connector

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

Red - 1	6	- Ground
		11	- Not Used
Green - 2	7	- Ground
		12	- Data from display (DDC1)
Blue - 3	8	- Ground	- H-Sync
		13
Not Used - 4	9	- Not Used
		14	- V-Sync
Ground - 5	10 - Ground		- Not Used
		15

Power Key - 6	5	- Clock
+5V dc - 4	3	- Ground
Not Used - 2	1	- Data

Keyboard Socket (upper)

Mouse Socket (lower)

Serial Device Connectors

1-	CF (DCD)
			(DSR) CC - 6
2-	BB (RD)		(RTS) CA - 7
3-	BA (TD)
4-	CD (DTR)		(CTS) CB - 8
5-	AB (GND)		(RI) CE - 9
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

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