Connect your existing Ultra ATA hard disk drives to the latest Serial ATA host adapter, This serial ATA to Ultra ATA adapter plugs into the 40-pin connector of an Ultra ATA 133/100/66 hard drive and adapts it for use with the latest Serial ATA controller, Supports ATA 66/100/133 IDE hard drives, Data transfer rates up to 150MBps, Connections: 40 pin IDE, Serial ATA cable and power board size 2"x 1