Each memory module undergoes various types of manual testing to ensure compatibility across different application environments, providing users with a high-performance and stable computing experience. Whether you are a general user, gamer, or computer enthusiast, you can benefit from the performance improvement this memory brings to your system. Hard disk and flash memory vendors 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: 1.5V 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: The package includes only the items listed above. Other products are not included. Lighting and display settings may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3 cm.