Seagate - Constellation.2 ST91000640NS 1 TB Internal Hard Drive 7200 RPM - Serial ATA/600 - Serial ATA - 2.5"

Store important games, videos, music, and more on this Western Digital Blue series hard drive. Its 2.5-inch form factor makes it suitable for use in laptops or notebooks. This 1TB Western Digital Blue series hard drive runs at 5400 rpm for decreased heat and power consumption.

Upgrade your computer with this Seagate BarraCuda internal HDD. The 4TB of total capacity provide optimum space for storing large files, while the data transfer speed of up to 190MB/sec. combined with a 256MB cache memory buffer delivers blazing-fast file transfers. This Seagate BarraCuda internal HDD has Self-Encrypting Drive technology and an Instant Secure Erase feature for efficient data removal and supports SATA III connectivity. Seagate equivalent and backward compatible models: ST4000DM004, ST4000DMZ04.

The WD Blue WD7500BPVX is a 750 GB internal hard drive designed for laptops and external enclosures. It features a 2.5-inch form factor, SATA 6 Gb/s interface, 8 MB cache buffer, and a 5400 RPM rotational speed. The drive offers up to 600 MB/s external and 138 MB/s internal data transfer rates, with an average latency of 5.5 ms. Reliability features include Shock Guard, WhisperDrive, SecurePark, and Advanced Format technology.