RAM & Memory Upgrades
16GB (2 x 8GB) DDR3 1333MHz PC3-10600 204-PIN SODIMM MEMORY RAM KIT COMPATIBLE WITH INTEL MAC MINI/MAC MINI SERVER (MID 2011) / IMAC i5/i7 (MID 2010) / IMAC i3/i5/i7 (MID/LATE 2011)
SIZE/CAPACITY: 16GB KIT (2 x 8GB) VOLTAGE/POWER CONSUMPTION: 1.5v CAS LATENCY: CL9 SPEED: PC3-10600 (1333MHz) TYPE/INTERFACE: 204-PIN DDR3 SODIMM 204-PIN INTEL IMAC & INTEL MAC MINI DDR3 SODIMM
https://www.bizrate.co.uk/ram_memoryupgrades/16gb-2-x-8gb-ddr3-oid6611084888.html