HP EliteDesk 800 G3 SFF Hardware Reference Manual page 19

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