HP Dc7900 Service Reference Guide: HP Compaq dc7900 Business PC - Page 91

Expansion Cards The computer has three standard full-height PCI expansion slots, one PCI Express x1 expansion slot, one PCI Express x16 expansion slot, and one PCI Express x16 expansion slot that is downshifted to a x4 slot. Figure 7-14 Expansion Slot Locations Table 7-2 Expansion Slot Locations Item Description 1 PCI Express x16 expansion slot 2 PCI Express x16 expansion slot that is downshifted to a x4 slot 3 PCI Express x1 expansion slot 4 PCI expansion slot 5 PCI expansion slot 6 PCI expansion slot NOTE: You can install a PCI Express x1, x8, or x16 expansion card in the PCI Express x16 slots. For dual graphics card configurations, the first (primary) card must be installed in the PCI Express x16 slot that is NOT downshifted to a x4 slot. To remove, replace, or add an expansion card: 1. Prepare the computer for disassembly (Preparation for Disassembly on page 63). 2. Remove the computer access panel (Computer Access Panel on page 70). 3. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot on the back of the computer chassis. Expansion Cards 79