HP Mini dc7900 tower PCI Express Connectors, Table, PCI Express Bus Connector Pinout

System Support

PCI Express Connectors

	A1	A11	A12	A18
x1 Connector								A82
x16 Connector
	B1	B11	B12					B82
Figure 4-3. PCI Express Bus Connectors
				Table 4-4.
		PCI Express Bus Connector Pinout
Pin	B Signal	A Signal	Pin	B Signal	A Signal	Pin	B Signal	A Signal
01	+12 VDC	PRSNT1#	29	GND	PERp3	57	GND	PERn9
02	+12 VDC	+12 VDC	30	RSVD	PERn3	58	PETp10	GND
03	RSVD	+12 VDC	31	PRSNT2#	GND	59	PETn10	GND
04	GND	GND	32	GND	RSVD	60	GND	PERp10
05	SMCLK	+5 VDC	33	PETp4	RSVD	61	GND	PERn10
06	+5 VDC	JTAG2	34	PETn4	GND	62	PETp11	GND
07	GND	JTAG4	35	GND	PERp4	63	PETn11	GND
08	+3.3 VDC	JTAG5	36	GND	PERn4	64	GND	PERp11
09	JTAG1	+3.3 VDC	37	PETp5	GND	65	GND	PERn11
10	3.3 Vaux	+3.3 VDC	38	PETn5	GND	66	PETp12	GND
11	WAKE	PERST#	39	GND	PERp5	67	PETn12	GND
12	RSVD	GND	40	GND	PERn5	68	GND	PERp12
13	GND	REFCLK+	41	PETp6	GND	69	GND	PERn12
14	PETp0	REFCLK-	42	PETn6	GND	70	PETp13	GND
15	PETn0	GND	43	GND	PERp6	71	PETn13	GND
16	GND	PERp0	44	GND	PERn6	72	GND	PERp13
17	PRSNT2#	PERn0	45	PETp7	GND	73	GND	PERn13
18	GND	GND	46	PETn7	GND	74	PETp14	GND
19	PETp1	RSVD	47	GND	PERp7	75	PETn14	GND
20	PETn1	GND	48	PRSNT2#	PERn7	76	GND	PERp14
21	GND	PERp1	49	GND	GND	77	GND	PERn14
22	GND	PERn1	50	PETp8	RSVD	78	PETp15	GND
23	PETp2	GND	51	PETn8	GND	79	PETn15	GND
24	PETn2	GND	52	GND	PERp8	80	GND	PERp15
25	GND	PERp2	53	GND	PERn8	81	PRSNT2#	PERn15
26	GND	PERn2	54	PETp9	GND	82	RSVD	GND
27	PETp3	GND	55	PETn9	GND
28	PETn3	GND	56	GND	PERp9

4-6 www.hp.com Technical Reference Guide