Features: 100% brand new and high quality Built-in high quality chips for stable performance and high speed operation. The high memory speed of 1600MHz increases the speed of your computer and brings convenience to your life. High-quality circuit module board, effectively avoiding corrosion and wear, durable and easy to carry. High performance Memory upgrade designed for Desktop PC / Computers. All modules undergo quality assurance testing to ensure dependable and reliable performance | Please verify the supported memory specifications of your system prior to purchase to ensure compatibility. Package Includes: 1PC x Memory Modules(A/B/C/D/E/F optional) A:2GB-800Mhz-DDR2(desktop) B:2GB-800Mhz-DDR2(laptop) C:4GB-1600Mhz-DDR3(desktop) D:4GB-1600Mhz-DDR3(laptop) E:8GB-1600Mhz-DDR3(desktop) F:8GB-1600Mhz-DDR3(laptop) Specifications: Capacity: 2G/4G /8GB Frequency: 800/1600MHz Number of pins: 204pin note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you