Timetec Hynix IC Apple 16GB Kit (2x8GB) DDR3 PC3-8500 1066MHz Memory Upgrade for MacBook 13-inch Mid 2010, MacBook Pro 13-inch Mid 2010, iMac 27-inch Late 2009, Mac Mini Mid 2010 (16GB KIT(2x8GB)) DDR3 1066MHz PC3-8500 204-Pin Unbuffered Non ECC 1.5V CL7 Dual Rank 2Rx8 based 512x8 Apple OS 10.7.5 or Later REQUIRED for utilization of more than 8GB of total system memory and need to updated with the latest EFI JEDEC standard 1.5V (1.425V ~1.575V) Power Supply Module Size: 8GB Package: 2x8GB For Apple Macbook / Macbook Pro/ iMac/ Mac Mini only For Apple MacBook 13-inch Mid 2010, MacBook Pro 13-inch Mid 2010, iMac 27-inch Late 2009, Mac Mini Mid 2010, Mac Mini Mid 2010 Server Guaranteed  Lifetime warranty from Purchase Date Free technical support (support@timetecinc.com) MON - FRI 9AM-6PM PST Timetec website: https://www.timetecinc.com/