Intel SE7520JR2 manual Full Height PCI-X Riser Slot, Revision 179 C78844-002, Prsntn

Intel® Server Board SE7520JR2					Connectors and Jumper Blocks
Pin-	PCI Spec	Description	Pin-	PCI Spec		Description
Side	Signal		Side A	Signal
B
24	AD[57]		24	GND
23	GND		23	AD[56]
22	AD[55]		22	AD[54]
21	AD[53]		21	V (I/O)		3.3V or 1.5V
20	GND		20	AD[52]
19	AD[51]		19	AD[50]
18	AD[49]		18	GND
17	V (I/O)	3.3V or 1.5V	17	AD[48]
16	AD[47]		16	AD[46]
15	AD[45]		15	GND
14	GND		14	AD[44]
13	AD[43]		13	AD[42]
12	AD[41]		12	V (I/O)		3.3V or 1.5V
		KEYWAY				KEYWAY
		KEYWAY				KEYWAY
11	GND		11	AD[40]
10	AD[39]		10	AD[38]
9	AD[37]		9	GND
8	V (I/O)	3.3V or 1.5V	8	AD[36]
7	AD[35]		7	AD[34]
6	AD[33]		6	GND
5	GND		5	AD[32]
4			4
3	PRSNT_N	0=Riser Present	3	GND
2	GND		2
1	Size	0=1U, 1= 2U	1	GND

5V = 12 = 12 or 6 amps 3 slots needs 6 amps for 3 10W boards 3.3V= 19 = 19 or 9.5 amps 3 slots needs 9 amps for 3 10W boards

202 pin connector length = 139.45mm=5.49”

7.2.2Full Height PCI-X Riser Slot

The full-height/length riser slot is implemented using a 280-pin connector and utilizes Intel Adaptive Slot Technology capable of supporting both PCI-X and PCI-Express riser cards. On a given riser card, the PCI add-in slot closest to the baseboard will always have device ID 17. On a three-slot riser card the middle PCI add-in slot will have device ID 18, and the top slot will have device ID 19. The interrupts on the PCI add-in slots should be rotated following the PCI bridge specification 1.0.

The following table provides the pinout for the Full Height riser slot.

Revision 1.0	179
	C78844-002