Power Supply for Cisco Linksys SPA IP Phones (PA100-NA) SPA300, 500, 900 Series-5V/2A Works with Cisco Linksys (PA100-NA) SPA 300, SPA500, CP500, and SPA900 Series High Quality - INPUT: 100-240 V AC OUTPUT: 5 V D Just as reliable as OEM charger. All products are tested to exceed & meet standards. SPA501G, SPA502G, SPA504G, SPA508G,SPA509G, SPA512G, SPA514G, SPA525G/2, SPA922, and SPA942 IP Telephones Most preferred for Cisco SPA IP Phones