Description Hard disk and flash memory vendors use decimal arithmetic: 1 MB = 1000 KB, 1 GB = 1000 MB. Operating systems use binary arithmetic: 1 MB = 1024 KB, 1 GB = 1024 MB. Therefore, there is a difference between the displayed capacity and the nominal capacity of hard disk and flash memory products. This discrepancy is normal and does not affect product authenticity or performance. Type: DDR3 Capacity: 4 GB Frequency: 1600 MHz Working Voltage: 1.5 V Memory Channel: Dual Channel Pins: 240 pins Module Type: Unbuffered, Non-ECC, Non-Registered DDR3 Desktop RAM Pin Count: 240 pins DDR3 Laptop RAM Pin Count: 204 pins Note: Product appearance and color may vary slightly between batches. The module color is blue. Material: PCB Dimensions: 13.3 x 3 cm Package Contents: 1 x RAM module Note: Actual color may vary slightly due to lighting conditions and display settings. Measurement tolerance: ±1–3 cm.