You are bidding on the original keyboard that started the basis of touch screen and sampling technology that created a lot of songs you even hear today. This is the Korg Pro X. It has 88 keys but 4 keys need replacing in the upper range due to damage of something fell on the keyboard, pictures are shown of the damage. The keyboard has scuffs and marks and obvious signs of being used but all functions and keys other than the 4 damaged keys work fine. It has a beautiful touch screen to navigate quickly through multiple screens. You can sample any sound and edit them and also edit the preset sounds to create your own sounds. The picture of the back side shows a SCSI is installed that is used to save songs to an external 2gig hard drive quickly and efficiently but I will only include the scsi in a bid of $800 or higher and also the hard drive will not be included at all but there is a floppy drive included to save songs and data.This is a great keyboard for live performance, studio recording, church functions, learning piano, and more. This keyboard is in good working order other than the 4 damaged keys and I know the happy bidder will enjoy this item for years to come but I am selling the keyboard as is with no return because I will be using the funds for another obligation. I purchased this keyboard used and enjoyed it even though I rarely used it. There is a black mark on the back of the keyboard that came from the keyboard being close to an electrical surge plug that sparked but the mark was the only damage done to the keyboard and did no other damage as the keyboard was not connected to that surge plug. I ensure the happy bidder will enjoy this keyboard for years to come. Happy bidding.