Note: Only suitable for specific server motherboards, Non ECC, Non RECC, Non Desktop. Please confirm compatibility prior to purchase. FBD refers to Fully-buffer DIMM, a serial transmission technology that enhances memory capacity and bandwidth. This is a new type of memory module and interconnection architecture developed based on DDR2 and DDR3. FB-DIMM significantly improves system memory bandwidth and increases maximum memory capacity. Capacity: 8GB Speed: DDR2 667MHz Number of Pins: 240 pins Type: Memory RAM Voltage: DDR2 1.7V Read First XP recognition is approximately 3GB Win 7 32Bit recognition is around 2.26-4.5GB Win 7 64Bit recognition is around 8-16GB Before purchasing RAM, please verify compatibility with your device. Common models are as follows: PC2 4200 = DDR2 533MHz PC2 5300 = DDR2 667MHz (also compatible with DDR2 533MHz) PC2 6400 = DDR2 800MHz (also compatible with DDR2 667MHz, DDR2 533MHz) PC2 8500 = DDR2 1066MHz The appearance and color of different batches may vary, but this will not affect functionality. Size: 13.3cm Material: Metal + PCB Color: blue + green Package Contents: 1 x RAM Only the package content listed above is included; other products are not part of the package. Note: Light reflection and different displays may cause the item's color to differ slightly from the actual product. Measurement tolerance is allowed at +/- 1-3cm.