The G.Skill F3-10666CL9S-8GBSQ is an 8-GB DDR3-1333 memory module SQ series in SO-DIMM form factor (PC3-10666). The 204-pin Unbuffered SO-DIMM is programmed to a CAS latency of 9 at 1333 MHz and has gold-plated contacts. SO-DIMMs are, due to their compact design for notebooks or mini-PC systems.