Table 6-8 System board descriptions and part numbers
Description Spare part number
System board (includes integrated processor)
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating systems
xxxxxx-601: Windows operating system
NOTE: The system board repair support kit is available as spare part number N53628-888.
Intel i7-1355U processor and NVIDIA GeForce RTX 2050 graphics N42404-xx1
Intel i5-1335U processor and NVIDIA GeForce RTX 2050 graphics N42403-xx1
Intel i7-1355U processor and integrated graphics N42398-xx1
Intel i7-1355U processor and integrated graphics, WWAN models N42402-xx1
Intel i5-1335U processor and integrated graphics N42397-xx1
Intel i5-1335U processor and integrated graphics, WWAN models N42401-xx1
Intel i3-1315U processor and integrated graphics N42396-xx1
Intel i7-1360P processor and integrated graphics N42400-xx1
Intel i5-1340P processor and integrated graphics N42399-xx1
Intel U300 processor N42395-xx1
Before removing the system board, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 37).
2. Remove the bottom cover (see Bottom cover on page 37).
3. Remove the battery (see Battery on page 46).
4. Remove the fan (see Fan on page 50).
When you replace the system board, be sure to remove the following components (as applicable) from
the defective system board and install them on the replacement system board:
● Memory modules (see Memory modules on page 38).
● WLAN module (see WLAN module on page 40).
● WWAN module (see WWAN module on page 42).
● Solid-state drive (see Solid-state drive on page 43).
● Heat sink (see Heat sink on page 52).
Remove the system board:
1. Disconnect the following cables from the system board:
NOTE: You should never disconnect the RTC battery cable from the system board.
● Antenna cables from the WLAN module (select products only) (1)
System board
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