HP dx2450 manual 81

CD-ROM 50-Pin Connector

Connector

Pin	Signal	Pin	Signal	Pin	Signal	Pin	Signal
1	Audio L-ch	14	DD12	27	IORDY	40	+5V
2	Audio R-ch	15	DD3	28	DMACK	41	+5V
3	Audio GND	16	DD13	29	INTRQ	42	+5V
4	GND	17	DD2	30	IOCS16	43	GND
5	RESET	18	DD14	31	DA1	44	GND
6	DD8	19	DD1	32	PDIAG	45	GND
7	DD7	20	DD15	33	DA0	46	GND
8	DD9	21	DD0	34	DA2	47	CSEL
9	DD6	22	DMARQ	35	CS1FX	48	GND
10	DD10	23	GND	36	CS3FX	49	Vendor-specific
11	DD5	24	DIOR	37	DASP	50	Vendor-specific
12	DD11	25	DIOW	38	+5V
13	DD4	26	GND	39	+5V

24-Pin Power

Connector
24				13
						Front
12				1
Pin	Signal		Pin		Signal	Pin	Signal	Pin	Signal
1	+3.3V	7			GND	13	+3.3V	19	GND
2	+3.3V	8			POK	14	–12V	20	open
3	GND	9			+5 Vaux	15	GND	21	+5V
4	+5V	10			+12V	16	PSON	22	+5V
5	GND	11			+12V	17	GND	23	+5V
6	+5V	12			+3.3V	18	GND	24	GND

CD-ROM 50-Pin Connector 75