Note: Only for Server motherboards,Non ECC, Non RECC, Non Desktop,Please confirm whether it is appropriate before purchasing stands for Fully-buffer DIMM, which is a serial transmission technology that can improve memory capacity and transmission bandwidth.It is a new type of memory module and interconnection architecture developed by on the basis of DDR2 and DDR3.FB-DIMM can greatly improve the system memory bandwidth and greatly increase the maximum memory capacity.Total Capacity: 8GBSpeed: DDR2 667MhzNumber of Pins: 240 pinsType: Memory RamVoltage: DDR2 1.7VRead FirstThe Recognition of XP is around 3GBThe Recognition of Win 7 32Bit is around 2.26-4.5GBThe Recognition of Win 7 32Bit is around 8-16GBBefore purchasing , please confirm which model is suitable for your Desktop/Laptop, usual models are as bellow:PC2 4200 = DDR2 533MHZPC2 5300 = DDR2 667MHZ (Compatible with DDR2 533MHZ)PC2 6400 = DDR2 800MHZ (Compatible with DDR2 667MHZ, DDR2 533MHZ)PC2 8500 = DDR2 1066MHZThe appearance and color of different batches of products may be different, which will not affect the usesize: 13.3cmMaterial: Metal+PCBcolour: blue + greenPackage Contents:1 x RamOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.