Specifications

Dell
PowerEdge R715 Technical Guide 36
10 I/O Slots
10.1 Overview
The PowerEdge R715 includes a total of six PCIe slots and one dedicated internal storage card slot.
All slots are PCI Express Gen 2. See Table 11 for more information.
Table 11. PCI Expansion Slots
PCI Slot #
Mechanical
Electrical
Height
Length
Bracket
Max Power
1
x16
x8
4.376‖
9.5‖
FH
System can
support
2x 25W +
4x 15W
cards
2
x8
x4
4.376‖
9.5‖
FH
3
x8
x8
4.376‖
9.5‖
LP
4
x8
x8
4.376‖
9.5‖
LP
5
x16
x8
4.376‖
9.5‖
FH
6
x16
x8
4.376‖
9.5‖
FH
Internal
x8
x4
—
—
—
—
Two low-profile PCI Express slots are provided on the IO planar as follows:
 Slot3
 Slot4 (NC-SI cable header for NC-SI supported NICs)
The two PCI Express risers provide up to four expansion slots and one internal slot as follows:
 Riser1 (center riser; all slots are controlled from the PEX8642 PCIe Gen2 arbiter):
o Slot1 (top)
o Slot2 (bottom)
o Storage adapter (internal slot; accommodates internal RAID controllers with no sled)
 Riser2 (left riser; both slots are controlled from the IOB PCIe Gen2 arbiter [port GPP]):
o Slot5 (top)
o Slot6 (bottom)
The PowerEdge R715 supports 25W maximum power for the 1st and 2nd cards and 15W for the 3rd
through 6th cards. The lower power support on the 3rd through 6th cards is due to system thermal
limitations.
For more information about the PCI expansion slots, see the Expansion Cards and Expansion-Card
Risers section in the Installing System Components chapter in the PowerEdge R715 Hardware Owner’s
Manual on Support.Dell.com.
10.2 PCI Risers
The PowerEdge R715 requires two PCI Express risers: Riser1 and Riser2. Both risers must be
connected for the system to power up. Each riser connects to the planar through a physical x16 PCI
Express connector with a Dell custom pin-out. There is no support for hot-plug or hot-removal for the
risers.
10.3 Boot Order
The boot order can be customized based on bootable devices detected by the BIOS.