G-Force 3 is a market-tested product and is proven for reliability and quality. With 4TB capacity, G-Force 3 offers a dependable storage expansion from your built-in hard drive so you can store all of your valuable data and digital memories. This external hard drive also delivers fast read & writes, better OS performance, and speedy file transfer at 7200RPM. Using high-quality aluminum, the GFORCE 3 does not need a fan and as it doubles at a heat sink. The versatile sleek design makes it a must-have complement to any home or office environments.