In excellent used condition. TESTED AND WORKING The Genuine Bose Power Supply PSM36W-208 is a black wall charger designed specifically for Bose Sounddock players. It features a square 4 pin connector and is compatible with the 1st, 2nd, and 3rd generation models. Made of rigid plastic, this unit is manufactured by Bose and is a genuine accessory for their SoundDock series. It is a portable power supply unit that is essential for keeping your Bose SoundDock charged and ready to use at all times.