USB doors are available for both sides of the computer. Use the same removal and replacement
procedures for both doors.
Reverse this procedure to install the USB door.
System board
To remove the system board, use these procedures and illustrations.
Table
5-12 System board descriptions and part numbers
Description Spare part number
AMD Ryzen 5 3500C processor, 8 GB of system memory; no eMMC memory (models with a ngerprint
sensor)
M50344-001
AMD Ryzen 3 3250C, 8 GB of system memory, and 64 GB of eMMC memory (models with a ngerprint
sensor)
M50345-001
AMD Ryzen 3 3250C, 8 GB of system memory; no eMMC memory (models with a ngerprint sensor) M50343-001
AMD Ryzen 3 3250C, 4 GB of system memory; no eMMC memory (models with a ngerprint sensor) M53245-001
AMD Athlon Silver 3050C, 4 GB of system memory, 64 GB of eMMC memory (models with a ngerprint
sensor)
M49455-001
AMD Athlon Silver 3050C, 4 GB of system memory, 64 GB of eMMC memory (models without a ngerprint
sensor and with a backlit keyboard)
M35762-001
AMD Athlon Silver 3050C, 4 GB of system memory, 64 GB of eMMC memory (models without a ngerprint
sensor and without a backlit keyboard)
M35768-001
Before removing the system board, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 22).
2. Remove the bottom cover (Bottom cover on page 22).
3. Remove the battery (see Battery on page 23).
4. Remove the fan (see Fan on page 28).
34 Chapter 5 Removal and replacement procedures for authorized service provider parts