System Board; M70S Gen 2 - Lenovo ThinkCentre M90s Gen 2 Hardware Maintenance Manual

System board

M70s Gen 2

1
8-pin power connector
3
Microprocessor socket
5
Memory slot (DIMM1)
7
Memory slot (DIMM3)
9
Illuminated red dot connector
11
Internal speaker connector
13
SATA power connectors
15
SATA 3.0 connectors
17
M.2 solid-state drive slot
19
Coin-cell battery
21
Front USB 2.0 connector (card reader connector)
23
Serial (COM2) connector
58
M70s Gen 2 and M90s Gen 2 Hardware Maintenance Manual
2
PS/2 keyboard and mouse connector
4
Microprocessor fan connector
6
Memory slot (DIMM2)
8
Memory slot (DIMM4)
10
Power button connector
12
10-pin power connector
14
Auxiliary fan connector
16
Clear CMOS (Complementary Metal Oxide
Semiconductor)/Recovery jumper
18
M.2 Wi-Fi card slot
20
Thermal sensor connector
22
Parallel connector
24
PCI Express x1 card slot