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Description Spare part number
Equipped with an Intel Atom N475 1.83-GHz processor (single core, 512-KB level 2 cache, 667-
MHz FSB, 6.5 W) but not WWAN capability, for use with computer models with model numbers
3500 through 3599 or 3600 through 3699
633487-001
Equipped with an Intel Atom N455 1.66-GHz processor (single core, 512-KB level 2 cache, 667-
MHz FSB, 6.5 W) and WWAN capability, for use with computer models with model numbers 3700
through 3799
630969-001
Equipped with an Intel Atom N455 1.66-GHz processor (single core, 512-KB level 2 cache, 667-
MHz FSB, 6.5 W) but not WWAN capability, for use with computer models with model numbers
3700 through 3799
630966-001
Equipped with an Intel Atom N455 1.66-GHz processor (single core, 512-KB level 2 cache, 667-
MHz FSB, 6.5 W) and WWAN capability, for use with Compaq Mini CQ10 LTE computer models
with model numbers 3700 through 3799
642158-001
Equipped with an Intel Atom N455 1.66-GHz processor (single core, 512-KB level 2 cache, 667-
MHz FSB, 6.5 W) and WWAN capability, for use with computer models with model numbers 3500
through 3599 or 3600 through 3699
633494-001
Equipped with an Intel Atom N455 1.66-GHz processor (single core, 512-KB level 2 cache, 667-
MHz FSB, 6.5 W) but not WWAN capability, for use with computer models with model numbers
3500 through 3599 or 3600 through 3699
633486-001
Before removing the system board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the following components:
a. Battery (see
Battery on page 40).
b. Service access cover (see
Service access cover on page 43).
c. Hard drive (see
Hard drive on page 45).
d. Keyboard (see
Keyboard on page 55).
e.
Display assembly (see
Display assembly on page 61).
5. Disconnect the WWAN antenna cables from the WWAN module (see
WWAN and GPS modules
(select models only) on page 48).
6.
Disconnect the WLAN antenna cables from the WLAN module (see
WLAN module on page 50).
72 Chapter 4 Removal and replacement procedures