AcBel 3666546B Switching Adaptor

AcBel WA9003 Switching Adaptor, part number 3666546B, is a compact 5 V DC power supply designed as a replacement for AcBel-made wall adapters used with Comcast Xfinity equipment. It accepts 100–120 V AC mains and delivers up to 1.5 A of continuous output, suitable for powering small set-top boxes and digital transport devices. The DC output is delivered through a 3.5 mm outer diameter / 1.35 mm inner diameter barrel connector (2-pin plug). Verified listings tie WA9003/3666546B to Comcast/Xfinity devices such as the DC50Xu, DC60Xu, and DC50X digital transport boxes, as well as related Challenger EPS or DCI105COM components. As a switching adapter, it reflects the contemporary design used to regulate output under varying loads while staying within a compact form factor. This model is a dedicated 5 V / 1.5 A supply with the typical connector standard used in those equipment families, making it a practical replacement when the original PSU is lost or damaged for compatible devices.