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 experience improved system performance with this memory upgrade. 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 a slight difference between the displayed capacity and the nominal capacity of hard disk or flash memory products. This is normal and does not affect the authenticity or functionality of the product. Specification: Type: DDR3 Capacity: 4GB Frequency: 1600MHz Working Voltage: 1.35V Memory Channel: Dual Channel Pins: 240pin Unbuffered, Non-ECC, Non-Registered Color: Blue Material: PCB Size: 13.3 x 3cm Package Contents: 1 x DDR3 4GB Desktop Memory RAM Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3cm.