Lenovo T420 Maintenance Manual page 121

Table 31. Removal steps of system board and ExpressCard slot assembly (continued)
CPU
a
Accelerometer chip for the HDD Active Protection System
b
Platform Controller Hub (PCH)
c
Graphic Processing Unit (GPU) (Discrete graphics chip)
d
Note: The GPU
not have a GPU on the system board.
For Switchable Graphics models:
For Integrated Graphics models:
is only for models with switchable graphics. Models with integrated graphics do
d
.
Chapter 8 Removing and replacing a FRU
115