Each memory module undergoes various types of manual testing to ensure compatibility across different application environments, providing users with high performance and high stability for a reliable computing experience. Whether you are a general user, gamer, or computer enthusiast, you can benefit from the performance improvement that this memory brings to your system. Hard disk and flash memory manufacturers use decimal arithmetic: 1MB = 1000KB, 1GB = 1000MB. However, operating systems use binary arithmetic: 1MB = 1024KB, 1GB = 1024MB. As a result, there may be slight differences between the displayed capacity and the nominal capacity of hard disk or flash memory products. This is normal and does not affect product authenticity. Specification: Type: DDR3 Capacity: 4GB Frequency: 1600MHz Working Voltage: 1.35V Memory Channel: Dual Channel Pins: 240 pins Unbuffered, Non-ECC, Non-Registered Color: Blue Material: PCB Size: 13.3 x 3 cm Package Contents: 1 x DDR3 4GB Desktop Memory RAM Note: Light shooting and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement allows an error of +/- 1-3 cm.