NOTE: This is an OEM version of the drive so comes without a manual or SATA lead or DVD-playing software - for any of that stuff you need to get the RETAIL version, which is obviously more expensive. But this OEM drive is fine if you just want to replace an existing DVD drive, as you'll already have DVD-playing software and leads.
However, if you are replacing an older IDE (also called P-ATA)DVD or CD-drive , then be aware you will need TWO additional cables - 1)a SATA data cable connecting this drive to the SATA-socket on your motherboard, 2)AND a SATA power cable - which will convert the older 4-pin molex IDE power-supply cable from your old power supply into a SATA power connector. Both these are available from amazon as well for a few pounds, so you need to factor in their cost to the total price.
It is easy to install - just pull out the DVD-tray if you have one, unscrew the old DVD-drive, unconnect the power and IDE/or SATA data cable to the motherboard, pull out the old drive, slide in this new SATA baby, rescrew the 4 screws again, reconnect the SATA data cable to the motherboard, fit the SATA 4-pin-adapter end of your SATA power cable to your old 4-pin IDE power cable if you need to, fit the SATA power cable to the drive, close the case and switch on and Hey Presto! - the new Sony SATA drive should be automatically recognised.
Its very fast, with a tray that quickly snaps out and whips back in when you press the tray eject button, and works well without any problems with Sony reliability. Looks a cool matt black, too.
A good deal for the price. Just make sure you have/or get both SATA cables when ordering this