4. Remove the fan (4) from the computer.
To install the fan, reverse this procedure.
I/O board
To remove the I/O board, use this procedure and illustration.
Table 8-5
I/O board descriptions and part numbers
Description Spare part number
I/O board for use in models without a Ryzen PRO processor with only WLAN N95961-001
I/O board for use in models without a Ryzen PRO processor with WLAN and WWAN N95962-001
I/O board for use in models with a Ryzen PRO processor with only WLAN P07357-001
I/O board for use in models with a Ryzen PRO processor with WLAN and WWAN P07358-001
I/O board cables (included in Cable Kit) N98721-001
RJ-45 (network) jack door, plastic N96450-001
RJ-45 (network) jack door, metal N96449-001
Before removing the I/O board, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 62).
2. Remove the bottom cover (see Bottom cover on page 62).
3. Remove the battery (see Battery on page 74).
4. Remove the fan (see Fan on page 78).
Remove the I/O board:
1. Disconnect the cables from the smaller ZIF connector (1) and larger ZIF connector (2) on the I/O
board.
2. Remove the four Phillips M2.0 × 4.0 screws (3) that secure the board to the computer, and then
remove the network jack door (4) from the board.
I/O board
79
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