Listing this pre-owned Yamaha Tyros-4 keyboard/workstation, Instrument is used, and does display some wear, body has color wear from frequent use by the usb thumb drive portal, and the modulation, pitch bend area... also the start/stop button doesn't engage correctly, (I use the foot controller for this function so I wouldn't have noticed). All other facets tested and work perfectly, mic, thumb drive, hard drive, in and out-put portals...I have also taken the liberty of uploading tens of thousands of styles on the hard drive...(on or about 100k total), we offer styles, registration's, songs, multi pads, wave backing tracks, too many to mention individually, (an exclusive from my store)...