5. Remove the touchpad from the computer (5).
Reverse this procedure to install the touchpad.
System board
To remove the system board, use these procedures and illustrations.
Table 5-11
System board descriptions and part numbers
Description Spare part 
number
System board (includes processor):
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating system
xxxxxx-601: Windows 10 operating system
Intel Core i5-1240P processor with 4 GB of unied memory architecture (UMA) graphics memory N13551-601
Intel Core i7-1260P processor with 4 GB of UMA graphics memory N13552-601
Intel Core i5-1235U processor and 4 GB of discrete graphics memory N13549-601
Intel Core i7-1255U processor and 4 GB of discrete graphics memory N13550-601
Before removing thesystem board, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 33).
2. Remove the bottom cover (see Bottom cover on page 33).
3. Remove the battery (see Battery on page 34).
NOTE:
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Chapter 5Removal and replacement procedures for authorized service provider parts