HP DC7800 - Manual (Page 132)

Expansion Cards
The computer has one standard low-profile PCI expansion slot that can accommodate an expansion
card up to 17.46 cm (6.875 inches) in length. The computer also has two PCI Express x1 expansion
slots and one PCI Express x16 expansion slot.
NOTE: The PCI and PCI Express slots support only low profile cards. An optional riser is available
from HP that will support two full-height PCI cards. If the riser is installed, the PCI Express expansion
slots are inaccessible.
Item Description
1 PCI expansion slot
2 PCI Express x1 expansion slot
3 PCI Express x16 expansion slot
4 PCI Express x1 expansion slot
NOTE: You can install a PCI Express x1, x4, x8, or x16 expansion card in the PCI Express x16
expansion slot.
To install an expansion card:
1. Prepare the computer for disassembly ( Preparation for Disassembly on page 107 ).
2. Remove the access panel ( Computer Access Panel on page 113 ).
3. Locate the correct vacant expansion socket on the system board and the corresponding expansion
slot on the back of the computer chassis.
120 Chapter 8 Removal and Replacement Procedures Small Form Factor (SFF) Chassis