ESPE-0909-W2E-2155+OP is a switched-mode power supply with an output of 9VDC, 1A, 9W. The connector is 5.5/2.1 mm with a plug, with a power efficiency rating of 74% and is manufactured by Espe. It is designed to convert AC power to a regulated DC output and can supply power for a variety of applications. The power supply is enclosed in a compact, lightweight plastic case, making it ideal for portable devices. It is UL and cUL approved, and provides short circuit, over-current, and over-voltage protection.