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4.20 System Board 4 Replacement Procedures
3. Remove the keyboard, HDD, main module, CPU, modem or Bluetooth unit,
expansion memory cards, wireless LAN cards, PC card(s), top cover and display
assembly.
4. Remove nine M2.5×4 screws securing the low I/O cover (five from the top, two
from the rear, and two from the base).
5. Remove the four hexagonal port screws.
Fig 4-34: Removing the hexagonal port screws
6. Remove the low I/O cover.
Satellite P20 Series Maintenance Manual 4-59