4GB Kit ( 2 x 2GB Modules ) DDR3 1066/1067 MHz ( PC3-8500 ) DDR3 SO-DIMM ( 204-Pin ) Non-ECC Unbuffered Apple Mac Certified Memory RAM Upgrade Apple Order Numbers: MB417LL/A / MB418LL/A / MB419LL/A / MB420LL/A / MB950LL/A / MB952LL/A / MB953LL/A / MC507LL/A / MC015LL/A / MC015LL/B / MB463LL/A / MB464LL/A / MC238LL/A / MC239LL/A / MC408LL/A / MC270LL/A / MC438LL/A / MB466LL/A / MB467LL/A / MC207LL/A / MC516LL/A / MB470LL/A / MB471LL/A / MC026LL/A / MB60 Apple Model IDs: iMac10,1 / iMac11,1 / iMac9,1 / MacBook5,1 / MacBook6,1 / MacBook7,1 / MacBookPro5,1 / MacBookPro5,2 / MacBookPro5,3 / MacBookPro5,5 / MacBookPro6,1 / MacBookPro6,2 / MacBookPro7,1 / Macmini3,1 / Macmini4,1 Apple Model Numbers/EMC: A1224 (EMC 2266) / A1224 (EMC 2316) / A1225 (EMC 2267/2134) / A1311 (EMC 2308) / A1312 (EMC 2309) / A1312 (EMC 2374) / A1278 (EMC 2254) / A1342 (EMC 2350) / A1342 (EMC 2395) / A1278 (EMC 2326) / A1286 (EMC 2324/2325) / A1297 (EMC 2272) / A1278 (EMC 2351) / A1286 (EMC 2353) / A1297