A1242 MB869LL USB Wired Keyboard US 661-4905 Macs NB-5394W
This is a 109 Key White Apple Keyboard (USB) (A1048).
EEE code: XMX
Apple part number: 661-4905
Compatible models: A1224, A1225, A1283, A1289, A1311, A1312
661-4905 Wired Keyboard (2009), US - Macs