The seller notes that the unit has issues with sound (described as a strange, heavy sound like a drum/taiko) and that the keyboard/cursor keys are difficult to press. The unit has been tested for power-on and basic input (keyboard, cassette tape, and cartridge slot), but the sound is described as 'junk' or 'defective' (難あり). Includes Yamaha-specific audio/video cables. The side slot cover is missing.