System board connections
Refer to the following illustration and table to identify the system board connectors for your model.
Item System board connector System board label Color Component
1 PCI Express x16 downshifted to
a x4
X4PCIEXP White Expansion card
2 PCI Express x1 X1PCIEXP2 Black Expansion card
3 PCI Express x1 X1PCIEXP1 Black Expansion card
4 PCI Express x16 X16PCIEXP Black Expansion card
5 DIMM4 (Channel A) DIMM4 White Memory module
6 DIMM3 (Channel A) DIMM3 Black Memory module
7 DIMM2 (Channel B) DIMM2 White Memory module
8 DIMM1 (Channel B) DIMM1 Black Memory module
9 M.2 WLAN WLAN Black M.2 WLAN card
10 Battery BAT Black Battery
11 SATA 3.0 SATA0 Dark blue Primary hard drive
12 SATA 3.0 SATA3 Light blue Any SATA device other than the primary
hard drive
13 SATA 3.0 SATA2 Light blue Any SATA device other than the primary
hard drive
14 SATA 3.0 SATA1 Light blue Any SATA device other than the primary
hard drive
15 M.2 SSD SSD Black M.2 SSD storage card
24 Chapter 4 Removal and replacement procedures – small form factor (SFF) chassis
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