Appearance Dimensions 100 mm x 69.85 mm x 6.8 mm (3.94" x 2.75" x 0.28") Weight 45 g (1.59 oz) Storage Flash Type QLC NAND flash Capacity 500 GB / 1 TB / 2 TB Operating Environment Operating Temperature 0°C (32°F) ~ 70°C (158°F) Operating Voltage 5V±5% Performance Sequential Read/Write (CrystalDiskMark) 2 TB up to 550/500 MB/s 1 TB up to 550/500 MB/s 500 GB up to 550/500 MB/s 4K Random Read/Write (IOmeter) 2 TB up to 81,000/80,000 IOPS 1 TB up to 57,000/79,000 IOPS 500 GB up to 57,000/59,000 IOPS Terabytes Written (TBW) 2 TB 400 TBW 1 TB 200 TBW 500 GB 100 TBW Mean Time Between Failures (MTBF) 2,000,000 hour(s) Drive Writes Per Day (DWPD) 0.19 (3 yrs) Note Speed may vary due to host hardware, software, usage, and storage capacity. The workload used to rate DWPD may be different from your actual workload, which may vary due to host hardware, software, usage, and storage capacity. Terabytes Written (TBW) expresses the endurance under the highest capacity. For Mac users please visit our Apple Solutions here . Warranty Certificate CE / FCC / BSMI / KC / RCM Warranty Three-year Limited Warranty Warranty Policy Please click here for more information about the Transcend Warranty Policy. Warranty does not apply when SSD Scope's lifetime indicator displays 0% within the warranty coverage. Package Package Contents Full unit System Requirement Operating System Microsoft Windows 7 Microsoft Windows 8 Microsoft Windows 10 Linux Kernel 2.6.31 or later Technology TRIM & NCQ Command S.M.A.R.T. DDR3 DRAM Cache - Advanced Garbage Collection DevSleep Mode RAID Engine LDPC Coding Less is More Featuring QLC NAND Flash, SSD220Q's storage density per cell boosts 33%. More storage capacity is unleashed for more data. Your performance is no longer limited. Unlock your potential now! Performance Boost for Everyday Computing Taking full advantage of the SATA III 6 Gb/s interface and built-in SLC caching technology, Transcend's SSD220Q achieves exceptional transfer speeds of up to 550 MB/s read and 500 MB/s write. Guaranteed Endurance and Reliability Transcend's SSD220Q offers great terabytes written (TBW) values (up to 400 TBW) indicating the total amount of data you can write on the drive over its lifetime. RAID engine and LDPC coding Detects and corrects transfer errors to prevent data corruption Garbage Collection Relocates existing data to release memory blocks Wear-leveling Distributes data evenly across memory cells to prolong SSD's lifespan DevSleep Intelligently shuts down SATA interface when not in use to prolong device's battery life A better choice than HDD Solid-state drives dominate the market for PC upgrades because they are faster and lighter than traditional hard disk drives. SSDs also consume less power, create less noise when in operation, and are more shock-resistant than hard drives. SSD Scope software Transcend SSD Scope is advanced, user-friendly software that makes it easy to ensure your Transcend SSD remains healthy, and continues to run fast and error-free by determining the condition and optimizing the performance of your drive. Learn more Guaranteed quality Transcend’s solid state drives are built to the highest standards and rigorously tested, and offer outstanding quality, performance, and reliability. Specifications