This is the Maspro Denko booster power supply unit "BPS6WSDU". I'm not very familiar with electronics, so I don't understand it well. I think it was recently removed from a TV, but the TV was working fine. The following is the description automatically entered on Mercari: The BPS6WSDU model with two coaxial terminals provides a stable signal supply. - Model Name: BPS6WSDU - Power: DC 15V 0.57A - Input Voltage: 100V - Output: 3224mW - Connection Terminals: Two coaxial terminals *This is a used item stored at home. Returns are not accepted, so please consider this before purchasing. _(._.)_