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 SATA 3.0 SATA1 Light blue Slim optical drive
6 DIMM4 (Channel A) DIMM4 White Memory module
7 DIMM3 (Channel A) DIMM3 Black Memory module
8 DIMM2 (Channel B) DIMM2 White Memory module
9 DIMM1 (Channel B) DIMM1 Black Memory module
10 Battery BAT Black Battery
11 M.2 WLAN 2230 WIRELESS Black M.2 WLAN card
12 SATA 3.0 SATA3 Light blue Any SATA device other than the primary
hard drive
13 M.2 SSD 2280 SSD2 Black M.2 SSD storage card
14 M.2 SSD 2280 SSD1 Black M.2 SSD storage card
15 SATA 3.0 SATA0 Dark blue Primary hard drive
16 SATA 3.0 SATA2 Light blue Any SATA device other than the primary
hard drive
System board connections 25
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