The Genuine Delta Power Cube 4 CP-PWR-CUBE-4 is a reliable AC/DC adapter specifically designed for Cisco devices such as 8811, 8841, 8845, 8851, 8861, and 8865. With a maximum output power of 135 W and an output voltage of 48 V, this adapter provides stable and efficient power supply for your networking equipment. Manufactured by Delta Electronics, a trusted brand in electronics, this power cube ensures compatibility and performance for your Cisco devices.