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Connector Pin Assignments

ATA/ATAPI (IDE) Standard Drive CableConnector

Pin	Signal	Pin	Signal	Pin	Signal
1	Reset	15	DD1	29	DMAK
2	Ground	16	DD14	30	Ground
3	DD7	17	DD0	31	INTRQ
4	DD8	18	DD15	32	IOCS16
5	DD6	19	Ground	33	DA1
6	DD9	20	(Key)	34	PDIAG (cable detect)
7	DD5	21	DMARQ	35	DA0
8	DD10	22	Ground	36	DA2
9	DD4	23	DIOW	37	CS1FX
10	DD11	24	Ground	38	CS3FX
11	DD3	25	DIOR	39	DASP
12	DD12	26	Ground	40	Ground
13	DD2	27	IORDY
14	DD13	28	CSEL

20-Pin Power

Connector

			20						11￿
										￿
			10			1
Pin	Signal	Pin	Signal			Pin		Signal			Pin	Signal
1	+3.3 V	6	+5 V		11			+3.3 V			16	GND
2	+3.3 V	7	GND		12			-12 V			17	GND
3	GND	8	POK		13			GND			18	open*
4	+5 V	9	+5 Vaux		14			PSON			19	+5 V
5	GND	10	+12 V		15			GND			20	+5 V

*Open for d300 series computers; -5V for all others

4-Pin Power (for CPU)

Connector and Icon	Pin	Signal
	1	GND
	2	GND
	3	+12 V
	4	-12 V

A–6 360201-002 Service Reference Guide, dc5000