Item Description Spare part number
For use in Turkey 633476-141
For use in the United Kingdom and Singapore 622343-031
Top cover assembly, includes: 633488-001
(3a) Top cover (including TouchPad)
(3b) Speakers (include cable)
Hard Drive Hardware Kit includes: 633491-001
(4a) Hard drive bracket
(4b) Hard drive screws
(4c) Hard drive Mylar cover
(5) Hard Drive Cable Kit (not illustrated; includes hard drive bracket, screws, and Mylar) 628532-001
(6) Hard drive (includes bracket and screws)
320-GB, 7200-rpm 627731-001
250-GB, 7200-rpm 635225-001
160-GB, 7200-rpm 635760-001
(7) System board (includes processor and replacement thermal material):
For use in models without high-definition video:
Intel Atom N455 1.66-GHz processor, 512-KB level 2 cache, 667-MHz front-side bus
(FSB) for use in models without a WWAN module
633486-001
Intel Atom N455 1.66-GHz processor, 512-KB level 2 cache, 667-MHz FSB for use in
models with a WWAN module
633494-001
Intel Atom N475 1.83-GHz processor, 512-KB level 2 cache, 667-MHz FSB for use in
models without a WWAN module
633487-001
Intel Atom N475 1.83-GHz processor, 512-KB level 2 cache, 667-MHz FSB for use in
models with a WWAN module
633495-001
For use in models with high-definition video:
Intel Atom N455 1.66-GHz processor, 512-KB level 2 cache, 667-MHz FSB for use in
models without a WWAN module
636336-001
Intel Atom N455 1.66-GHz processor, 512-KB level 2 cache, 667-MHz FSB for use in
models with a WWAN module
636338-001
Intel Atom N475 1.83-GHz processor, 512-KB level 2 cache, 667-MHz FSB for use in
models without a WWAN module
636337-001
Intel Atom N475 1.83-GHz processor, 512-KB level 2 cache, 667-MHz FSB for use in
models with a WWAN module
636339-001
System board with Intel Atom N550 1.5-GHz processor, 1-MB level 2 cache, 667-MHz
FSB, dual-core
638148-001
(8) Fan/heat sink assembly (includes replacement thermal material) 622330-001
20 Chapter 3 Illustrated parts catalog