Capacity: 250GBInterface: SATA 6 Gbps InterfaceSpeed: Read/write speeds of up to 560/530 MB/sMemory: 512 MB Low Power DDR4 SDRAMSequential Read: Up to 560 MB/sReliability (MTBF): 1.5 Million HoursDimension (WxHxD): 3.94" X 2.75 " X 0.27"..

Capacity: 500GBInterface: SATA 6 Gb/s Interface, compatible with SATA 3 Gb/s & SATA 1.5 Gb/sCompatibility: Windows10/Windows 8/Windows 7/Windows Server 2003 (32 bit and 64 bit), Vista (SP1 and above), XP (SP2 and above), MAC OSX and LinuxSequential Read Speed: Up to 560 MB/sCache Memory: Samsung 512 MB Low Power DDR4 SDRAMSpeed :Read/write spee..

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