The Apacer AS350X 256GB is a 2.5-inch SATA III SSD designed as a simple, affordable upgrade for laptops and desktops that still boot from a hard drive. Apacer rates it at up to 560MB/s sequential read and 540MB/s write, with up to 81K/74K random 4K IOPS, so start-up times, file searches and everyday applications feel dramatically quicker. Built on 3D NAND with SLC caching, it supports TRIM, NCQ, S.M.A.R.T. and SATA power management, and Apacer's SSD Utility software lets you check drive health. The slim 7mm (6.9mm) 2.5-inch housing fits virtually any notebook or desktop bay using standard SATA data and power connectors. The 256GB capacity suits a dedicated Windows boot drive or an office PC with modest storage needs. Endurance is rated at 180TB written with a 1.5 million hour MTBF, and it withstands 1,500G non-operating shock. Covered by Apacer's 3-year warranty (or TBW, whichever comes first).