SpecificationsMfr Part Number: ST3U4S13Features:Affordable, high performance USB 3.0 driveUp to 90MB/s Read and 16MB/s Write speedsUSB powered - no external power is requiredFully compatible with USB 3.0 and USB 2.0 (with some of the fastest USB 2.0 scores)Capacity: 4 GBInterface: USB 3.0NAND Flash: DDR ONFi TLCData Transfer Time:Sequential Read Rate: 90 MB/s (max)Sequential Write Rate: 16 MB/s (max)Operating Shock: 1500GOperating Vibration: 16GError Correction: Built in ECC and bad block managementDimensions: 19.0 x 61.0 x 11.6 mm