This is an SSD drive with a 240 GB storage capacity. This model has a 2.5" form factor, the most common for SSD drives.
From OnBuy
Hard Drive INTENSO 3813440 SSD 240GB Sata III
The product is available from £15.65 at international stores.
Conrad Electronic
Intenso High Performance 240 GB 2.5 (6.35 cm) internal SSD SATA 6 Gbps Retail 3813440