SPECIFICATIONSMemory Memory layout (modules x size) 1 x 8 GB Internal memory 8 GB Component for Notebook Memory form factor 204-pin SO-DIMM CAS latency 13 Memory voltage 135 V Unbuffered memory Yes ECC No Memory clock speed 1866 MHz Internal memory type DDR3 L Power Memory voltage 135 VDesign Colour of product Black Green Technical details Colour of product Black Green System requirements Mac operating systems supported Yes