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