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There are three types of PCI boards: 5V PCI boards, 3.3V PCI boards, and universal PCI boards.
A 5V PCI board must be installed in the 5V PCI slot, and a 3.3V PCI board must be installed in the 3.3V PCI slot. A
universal PCI board can be installed in any PCI slot.
5V PCI board
3.3V PCI board
Universal PCI board
The PCI-Express boards are x1, x4, x8, and x16. The server can contain x1, x4, and x8 PCI-Express boards.
PCI-Express board (x4)
PCI-Express board (x8)