1TB HGST Travelstar 2.5-inch 7mm SATA 6Gbps Laptop Hard Drive (5400rpm, 32MB cache) Z5K1000 1TB SATA 6Gbps laptop hard drive from HGST New generation slim hard drive - thickness only 7mm 5400rpm, 32MB built-in cache Suitable for most laptop and netbook computers HGST Travelstar Z5K1000 Series