PPA Int'l 1912 3.5-in Aluminum USB 2.0 / 1394 Combo External Case Box Contents - Package Contents - Hard Driver Enclosure, External Power Adapter, Power Core Cable, USB Cable, Driver CD USB 2.0 - Suitable for 3.5 HDD, Up to 480Mbit/sec on data transfer, Enhanced IDE/ATA/ATAPI protocol, USB1.1 downward compatible, Support ATA PIO modes0-4, Ultra DMA 2 & 4, Support hot swappable Firewire 1394 - Up to 400Mbit/sec on data transfer, Enhanced IDE/ATA/ATAPI protocol, Support ATA PIO modes 0-4, Ultra DMA modes 0 - 5, Support Hot swappable