UD PRO 256GB Form Factor: 2.5-inch internal SSD Interface: SATA 6.0Gb/s Total Capacity: 256GB Sequential Read speed : 530 MB/s Sequential Write speed : 500 MB/s Toshiba 3D TLC NAND Flash offers blazing speed, high capacity & enhanced reliability External DDR3 DRAM Cache for Better Sustain Speed TRIM & S.M.A.R.T supported Performance . Stability GIGABYTE Solid State Drive Industry Leading 3D NAND Flash GIGABYTE UD PRO series SSDs adopt 3D TLC NAND flash, which has higher bit capacity, R/W speed performance, endurance and reliability compared to 2D TLC flash. Moreover, with an optimized controller and firmware, GIGABYTE UD PRO series SSDs provide excellent performance for a smooth PC experience. External DDR3L SDRAM Cache The UD PRO SSD is equipped with high speed DDR3L SDRAM cache and does not need to reserve over-provisioning space, thus improving the random Read/Write performance. This means the users can use the full capacity of the drive. Moreover, external DRAM can be a buffer between controller and NAND flash for sustained performance when capacity is occupied by more and more data. SSD Tool Box The newly updated SSD Tool Box is an application that helps users monitor SSD Status, provides general information such as model name, FW version, health condition, drive optimization and also detects sensor temperature. Moreover, users can clear all the data with the Secure Erase function. You can download the SSD Tool Box from the Support. Reliability You Can Trust GIGABYTE UD PRO series SSDs possess both high data transferring speed and enhanced endurance, providing durable MTBF of 1.8 million hours. Specifications Technology MLC Capacity 256 GB Form factor 2.5\" Interface SATA3 Writing speed 500 MB/s Reading Speed 520 MB/s Installation height 7 mm Hardware encryption No NVMe No