user: ### NOW ANSWER:
Question: What is Model Number, when Part Number(s) is AY80609003987AB?
Columns: ['Model number', 'sSpec number', 'Frequency', 'GPU frequency', 'L2 cache', 'I/O bus', 'Memory', 'Socket', 'Release date', 'Part number(s)']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Atom Z600', 'SLBZP(C0)SLBR9', '1.2 GHz', '200 MHz', '512 KB', 'DMI', '1 × LPDDR-400', 'FC-BGA 518', 'May 4, 2010', 'AY80609004002AC']
SQL:

assistant: SELECT "Model number" FROM "Table" WHERE "Part number(s)" = 'AY80609003987AB';