Original Black Bose Sounddock I Power Supply PSM36W-208 +/- 18V Series I AC Adapter with Four Prong Plug

Black Bose Sounddock I (Series I) power supply. This power supply has 4 prong male plug which fits the Sounddock I with 4 prong female plug. Please be aware that there is a Sounddock II power supply has the exact same model number with a round plug. Bose offer 2 different style Power supply in the same part number: PSM36W-208. The one has ROUND DC CONNECTOR is for Bose SoundDock II and III. The other has Four Progn DC Connector is for Bose Sounddock I.