Table 7-3 USB board description and part number
Description Spare part number
Models with 5090, 5080, or 5070Ti graphics P30857-001
Before removing the USB board, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 38).
2. Remove the bottom cover (see Bottom cover on page 38).
3. Disconnect the battery cable from the system board (see Removing and reinstalling the same
battery on page 41).
Remove the USB board:
1. Disconnect the cable from the ZIF connector (2) on the USB board.
2. Remove the two Phillips M2.0 × 3.5 screws (3) that secure the board to the computer.
3. Lift the inside of the board (4) up, and then pull the board (5) into the computer to remove it.
To install the USB board, reverse this procedure.
Heat sink/fan assembly
To remove the heat sink/fan assembly, use this procedure and illustration.
Table 7-4
Heat sink/fan assembly description and part number
Description Spare part number
Heat sink, models with 5090, 5080, or 5070Ti graphics (includes fan and preapplied thermal grease) P30869-001
NOTE: You do not have to remove the heat sink before you remove the system board.
Heat sink/fan assembly
55
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