Lenovo 70AL Maintenance Manual page 52

1 4-pin power connector
Used to connect the power cable from the power supply.
2 System board battery
Your server has a special type of memory that maintains the date, time, and configuration information for
built-in features. The system board battery keeps the information active when you turn off the server.
3 Microprocessor socket
The microprocessor is secured in the microprocessor socket on the system board. A heat sink and fan
assembly is installed above the microprocessor to provide cooling.
4 Microprocessor fan connector
Used to connect the cable of the heat sink and fan assembly.
5 8
- Memory slots
Your server system board provides four memory slots to support up to four memory modules. For more
information, see "Memory module installation rules" on page 74.
9
Thermal sensor connector
Used to connect the thermal sensor cable.
10 System fan 2 connector
Used to connect the cable of the upper front system fan (front system fan 2).
11
4-pin power connector
Used to connect the power cable for optical drives.
12 4-pin power connector
Used to connect the power cable for hard disk drives.
13
Main power connector
Used to connect the 14-pin power connector of the power supply to provide main power to your server.
14 15 16 17 18 SATA connectors
Used to connect SATA signal cables for the SATA hard disk drives or SATA optical drives.
Notes:
• If your server has one SATA optical drive installed, use a SATA signal cable to connect the optical drive
to the SATA connector 4 on the system board.
• If your server has two SATA optical drives installed, use two SATA signal cables to connect the optical
drives to the SATA connector 4 and SATA connector 3 on the system board respectively.
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ThinkServer TS440 Hardware Maintenance Manual