Transcend storejet 25h3p 2tb usb 30 25 sata hdd storejet 25h3 usb 30 the storejet 25h3 usb 30 portable hard drive combines the superior performance of usb 30 vast storage space eye catching enclosure and a three stage shock protection system that meets us military drop test standards what else can you ask for features military grade shock resistance fully compliant with the hi speed usb 20 specification advanced 3 stage shock protection system durable anti shock rubber