8GB Kit ( 2 x 4GB Modules ) DDR3 1333 MHz ( PC3-10600 ) DDR3 SO-DIMM ( 204-Pin ) Non-ECC Unbuffered Apple Mac Certified Memory RAM Upgrade Designed For Select Apple Mac Systems: MacBook Pro iMac, Mac mini Compatible Apple Order Numbers: MC309LL/A / MC812LL/A / MC813LL/A / MC814LL/A / MD063LL/A / MC978LL/A / MC508LL/A / MC509LL/A / MC510LL/A / MC511LL/A / MC784LL/A / MC700LL/A / MC724LL/A / MC721LL/A / MC723LL/A / MD035LL/A / MC725LL/A / MD311LL/A / MD313LL/A / MD314LL/A / MD318LL/A / MD322LL/A / MC815LL/A / MC816LL/A / MC9 Compatible Apple Model IDs: iMac11,2 / iMac11,3 / iMac12,1 / iMac12,2 / MacBookPro8,1 / MacBookPro8,2 / MacBookPro8,3 / Macmini5,1 / Macmini5,2 / Macmini5,3 Compatible Apple Model Numbers/EMC: A1278 (EMC 2419) / A1278 (EMC 2555) / A1279 (EMC 2352-1) / A1279 (EMC 2564) / A1286 (EMC 2353-1) / A1286 (EMC 2563) / A1311 (EMC 2389) / A1312 (EMC 2390) / A1311 (EMC 2428) / A1312 (EMC 2429) / A1347 (EMC 2442)