Based on this product's specifications, here are some alternatives and similar models
Power adapter QOLTEC 15W 15V 1A with 5.5×2.5 mm plug
Summary description:
Mains power adapter from QOLTEC delivering 15W (15V, 1A) output with a 5.5×2.5 mm DC plug. Designed for compatible portable devices and electronics requiring 15V/1A input, it provides a compact, single-output solution for charging or powering routers, modems, small audio equipment and other appliances. Practical for home, office, and on-site use.