External enclosure supports IDE ATA-4 attractive design. Genesys GL711 chipset. Accommodates inside IDE/ATAPI 5.25 "CDRs such as or similar to connect to the computer via the FireWire (IEEE 1394). It allows a maximum transfer speed of 400Mbps. Supports DMA modes (0 to 2 ), PIO (0 to 4) and UDMA (0 to 2). Compatible with Windows 98, Windows 98 2nd Edition, Windows ME, Windows 2000, XP and Mac OS 8.6, 9.x and 10.x has 2 Sockets of type 6/6 to string more FireWire devices. Includes cable 6/6, adapter 3.5 "to 5.25" to accommodate within 3.5 "drive in case you want to use for this and external power supply.