 "Corsair - DDR3 4 GB SO-DIMM 204-pin" " Corsair 204-pin CMSO4GX3M1A1333C9 System Memory (RAM) CDW.com
"CMSO4GX3M1A1333C9 is Corsair's mainstream SODIMM memory solution for DDR3 laptops. Designed for notebooks, mini-PCs and netbooks, Corsair's high density SODIMMs allow users to maximize memory bandwidth and minimize performance bottleneck to deliver superior user experience." 
 "Corsair 4GB 2X2GB DDR3 1333MHz CL9 Dual Channel Memory Kit" Kit - CMV4GX3M2A1333C9 NCIX"
 Quick Specs: Compatibility Desktop Error Checking Non-ECC Number of Modules 2 x 2 GB Number of Pins 240-pin Signal Processing Unbuffered Form Factor DIMM Memory Speed 1333 MHz Memory Size 4 GB Memory Technology DDR3 SDRAM Memory Standard DDR3-1333/PC3-10600 ProductId 1015767274