Genuine ZB-H290020A-C power adapter, it uses a non-standard 90° trapezoidal (D shape) female plug, and features a 29V 2A power adapter, if your existing power adapter has the same configuration, it will replace yours seamlessly.  Compatibility: This power adapter has a non-standard 90-degree trapezoidal (D-shape) female plug. Before purchasing, please ensure that your existing power adapter has the exact same plug shape. Otherwise, it will not be compatible with your chair. The model number ZB-H290020A-C may not be sufficient to determine compatibility. If your current power adapter has a different output plug, this model will not be a replacement. This power adapter is compatible with other models that share the same output plug, such as GS04502900200HU and KDDY008M. Please note that this power adapter is designed for use in the United States, Canada, and Mexico. The plug may not be compatible with wall sockets in other regions. Specification Model No.: ZB-H290020A-C Input: 100-240V ~ 50/60Hz, 1.6A Output: 29V 2A Cabel length: 2m/80inch