1040 Memory Modules; M2 × 3 Mm, Flat-Head, Nylon-Coated; For Access, Remove These Frus In Order; 1020 Bottom Slot Cover - Lenovo B490 Hardware Maintenance Manual

Insert a screwdriver into the screw hole
Then remove the optical drive.
Removal steps of optical drive bezel and optical drive bracket

Remove the screw

1 and then remove the optical drive bracket.
Step Screw (quantity)
1
M2 × 3 mm, flat-head, nylon-coated (1)

1040 Memory modules

For access, remove these FRUs in order:

• "1010 Battery pack" on page 44
• "1020 Bottom slot cover" on page 44
46
Hardware Maintenance Manual
2 and push the optical drive in the direction shown by the arrow
Torque
Color
Black

1.85 kgf-cm

3 .