Lenovo 30BH User Manual page 18

Figure 4. Parts on the system board
1
PS/2 keyboard and mouse connector
3
Microprocessor
5
Battery
7
Memory slot 2 (DIMM2)
9
Memory slot 4 (DIMM4)
11
10-pin power connector
13
4-pin SATA power connectors
15
Parallel connector
17
SATA connectors
19
USB hardware disable header
21
Front USB 3.0 connector (for connecting USB
connectors on the front panel)
23
Clear CMOS (Complementary Metal Oxide
Semiconductor) /Recovery jumper
25
Internal speaker connector
27
PCIe x1 card slot 4
6
P320 User Guide
2
4-pin power connector
4
Microprocessor fan connector
6
Memory slot 1 (DIMM1)
8
Memory slot 3 (DIMM3)
10
Thermal sensor connector
12
Hard-disk-drive fan connector
14
Thunderbolt™ connector
16
eSATA connector
18
Power fan connector
20
Front bezel connector (for connecting LED indicators
and the power button)
22
USB 2.0 connectors (for connecting the front USB 2.0
connector, card reader connector, or Bluetooth
connector)
24
Serial (COM2) connector
26
Front audio connector
28
PCIe x4 card slot 3