Maximize your performance with this internal 256 GB SSD drive. This model has a 2.5" form factor, the most common for SSD drives.
From Amazon
Transcend SSD370S 256 GB 2.5 Inch SATA III 6 Gb/s Internal Solid State Drive (SSD) MLC NAND (TS256GSSD370S)
Clove Technology
Transcend SATA III 6Gb/s SSD370S 256GB
Conrad Electronic
Transcend SSD370S 256 GB 2.5 (6.35 cm) internal SSD SATA 6 Gbps Retail TS256GSSD370S