O Slots; Overview; Pci Risers - Dell PowerEdge R815 Technical Manual

Dell
10 I/O Slots

10.1 Overview

See Expansion Cards and Expansion-Card Risers section in the Installing System Components chapter
of the PowerEdge R815 Hardware Owner's Manual on Support.Dell.com/Manuals.
The Dell™ PowerEdge™ R815 includes a total of 6 PCI slots that reside on the IO planar and two riser
cards.
Two low-profile PCI Express slots are provided on the IO planar.
•
Slot3:
o Physical x8 (x8 electrical) PCI Express Gen2 slot
•
Slot4:
o Physical x8 (x8 electrical) PCI Express Gen2 slot
o NC-SI cable header for NC-SI supported NICs
The two PowerEdge R815 PCI Express risers provide up to four expansion slots and one internal slot as
follows:
•
Riser1 (Center; all slots are controlled from the PEX8642 PCIe Gen2 arbiter):
o Slot1 (top)

o Slot2 (bottom)



•
Riser2 (Left):
o Slot5 (top)

o Slot6 (bottom)


The PowerEdge R815 supports 25W maximum power for the 1
th
through 6 cards. The lower power support on the 3
limitations.

10.2 PCI Risers

The PowerEdge R815 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 Dell custom pin-out. See Table 10.
PowerEdge R815 Technical Guide
Physical x16 (x8 electrical) PCI Express Gen2 slot
Physical x8 (x4 electrical) PCI Express Gen2 slot
Storage Slot (internal, accommodates internal RAID controllers with no sled)
Physical x8 Storage adapter (x4 electrical) PCI Express Gen2 slot
Physical x16 (x8 electrical) PCI Express Gen2 slot
Physical x16 (x8 electrical) PCI Express Gen2 slot
Both slots are controlled from the IOB PCIE Gen2 arbiter (port GPP)
st nd
and 2 cards and 15W for the 3
rd th
through 6 cards is due to system thermal
rd
37