Complies with USB 2.0 & USB 1.1Embedded USB 2.0UTMI tranceiver OS Supported: Win XP/2000/ME/98/98SE, Mac OS9.x/xSupports 4 endpoints: Control/Bulk Read/Bulk Write/InterruptOperating Shock: 175G half-sine pulse of 2ms durationOperating Temperature: 0 to 65Operating Humidity: 8% to 90%Read/Write LED indicator1 HDD SpecificationSize: 45*48*16/12mmCapacity: 2G/4G/6G/8G/10G Internal Cache: 2MBData Transfer Rate: 7.9MB/sec. MaxAverage Seek Time: 10msOperating current: 225mA (idle) 500mA (start-up)