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.
a Security chip
b Accelerometer chip for the HDD Active Protection System
™
c ICH (I/O Controller Hub)
d GMCH (Integrated video chip)
e CPU
a
b
c
d
e
94 ThinkPad X300 Hardware Maintenance Manual