The Avaya Phone System Power Adapter EADP-20XB B with Power Cord is a reliable power adapter specifically designed for Avaya brand phone systems. It is compatible with OEM brands and features a model number of EADP-20XB B. This adapter ensures a steady power supply for your phone system, allowing for uninterrupted communication and functionality. With the included power cord, this product is a convenient and essential accessory for maintaining your Avaya phone system's performance.