Hardware Reference Guide

System board connections
See 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 ×16 X16PCIEXP black Expansion card
2 PCI Express ×1 X1PCIEXP black Expansion card
3 Battery BATTERY black Battery
4 DIMM4 (Channel A) DIMM4 white Memory module
5 DIMM3 (Channel B) DIMM3 black Memory module
6 DIMM2 (Channel A) DIMM2 white Memory module
7 DIMM1 (Channel B) DIMM1 black Memory module
8 M.2 WLAN 2230 WIRELESS black M.2 WLAN card
9 M.2 SSD 2280 SSD1 black M.2 SSD storage card
10 SATA 3.0 SATA1 light blue Any SATA device other than the primary
hard drive
11 SATA 3.0 SATA2 light blue Any SATA device other than the primary
hard drive
12 SATA 3.0 SATA0 dark blue Primary hard drive
12 Chapter 2 Hardware upgrades