Rear view with eight PCIe slots
Table 14.  Components on the rear of the server
Callout Callout
1  PCIe slot 1 (on riser 1 assembly) 2  PCIe slot 2 (on riser 1 assembly)
3  PCIe slot 3 (on riser 1 assembly) 4  PCIe slot 4 (on riser 2 assembly)
5  PCIe slot 5 (on riser 2 assembly) 6  PCIe slot 6 (on riser 2 assembly)
7  PCIe slot 7 (on riser 3 assembly) 8  PCIe slot 8 (on riser 3 assembly)
9  Power supply 1
10  Power supply 2 (optional)
11  NMI button
12  USB 3 (5 Gbps) connector (DCI)
13  VGA connector  14  USB 3 (5 Gbps) connectors (DCIs)
15  XClarity Controller network connector 16  Ethernet connectors on OCP 3.0 Ethernet adapter 
(optional)
Note: For more information about each component, see “Rear components overview” on page 50.
Chapter 2. Server components 45