Lenovo ThinkPad W700ds Hardware Maintenance Manual page 122

Following components soldered on the top side of the system board are extremely
sensitive. When you service the system board, avoid any kind of rough handling.
Upper side of the system board:
Bottom side of the system board:
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ThinkPad W700 and W700dsHardware Maintenance Manual
a
CPU
b
MCH (Memory Controller Hub)
c
Video sub card (Mobile PCI Express Module)
d
Accelerometer chip for the HDD Active Protection System
e
ICH (I/O Controller Hub)
a b
d
e
™
c