HP DL785 - Manual (Page 42)

To replace the component, reverse the removal procedure.
Expansion boards
PCIe I/O backplane
Description Item
PCI Express x8 non-hot-plug expansion slot 11 1
PCI Express x16 non-hot-plug expansion slot 10 2
PCI Express x8 non-hot-plug expansion slot 9 3
PCI Express x16 non-hot-plug expansion slot 8 4
PCI Express x4 non-hot-plug expansion slot 7 5
PCI Express x4 non-hot-plug expansion slot 6 6
PCI Express x16 non-hot-plug expansion slot 5 7
42 Removal and replacement procedures