Cisco AC Adapter + Cord for CP-7941/7942/7945/7961/7962/7961/7971/7975 IP Phones
Cisco IP Phone Power Supply (Power Cube)Features    48VDC local power supply    Required when not Cisco in-line power over ethernet    Compatible with Cisco 7902G, 7905G, 7910G,  7910G+SW, 7911G, 7912G, 7940, 7940G, 7941G, 7941G-GE, 7942G, 7960, 7960G, 7961G, 7970G, 7971G-GE, 7914, 7915, and 7916