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 X16PCIEXP Black Expansion card
2 PCI Express x4 X4PCIEXP Black Expansion card
3 Battery BAT Black Battery
4 DIMM4 (Channel A) DIMM4 White Memory module
5 DIMM3 (Channel A) DIMM3 Black Memory module
6 DIMM2 (Channel B) DIMM2 White Memory module
7 DIMM1 (Channel B) DIMM1 Black Memory module
8 M.2 WLAN WLAN Black M.2 WLAN card
9 M.2 SSD SSD Black M.2 SSD storage card
10 SATA 3.0 SATA0 Dark blue Hard drive
11 SATA 3.0 SATA1 Light blue Optical drive
System board connections 13
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