A 120 GB (4200 RPM) Serial ATA drive is standard. A 128 GB solid-state drive was available as an optional build-to-order upgrade for US$500. Either of these can be exchanged for a standard 2.5" 9.5mm hard drive or SSD.
Apple MacBook Air "Core 2 Duo" 1.6 13" (NVIDIA) Specs
Identifiers: Late 2008 - MB543LL/A - MacBookAir2,1 - A1304 - 2253*
A 120 GB (4200 RPM) Serial ATA drive is standard. A 128 GB solid-state drive was available as an optional build-to-order upgrade for US$500. Either of these can be exchanged for a standard 2.5" 9.5mm hard drive or SSD.