This is a SONY Blu-ray disc drive, model BDZ-AT900. It is being sold as junk because it displays a system error and does not operate. Error code E6101 appears, and after repeatedly turning the power on and off several times, a system error occurs. Judging from the situation, the HDD is likely faulty. The operation of other parts has not been confirmed, but it was used about a year ago, and there were no issues at that time. The Blu-ray drive was hardly used. The items included are the main unit, power cable, B-CAS card, remote control, and instruction manual. Although it has been cleaned, there are fine scratches and dust. The remote control, in particular, has worn buttons.