COMPATIBILITY: Compatible with Cisco SPA300 SPA500 CP500 SPA900, Compatible with SPA504G SPA303 SPA922 SPA942 SPA525G2 SPA962 SPA501G SPA508G SPA509G SPA512G SPA514G SPA525G-2 SPA942 SPA series POWER SPECS: Input: AC 110-240V, 50-60Hz. Output: DC 5V 2A, 5 feet power cord. FEATURES: Preferred and more affordable than OEM version; Power supply adapter for your Cisco Sound Station IP phones. SAFETY: Tested, approved and certified by FCC, CE and ROHS, and designed with safeguard features against over-voltage, over-current, short-circuit and over-temperature. POWER CORD: Our cables are of high quality and suitable for ordinary household use, safe, stable, reliable, with the use of power can provide you with the most cost-effective power supply. Please contact us with any questions or concerns. COMPATIBILITY: Compatible with Cisco SPA300 SPA500 CP500 SPA900, Compatible with SPA504G SPA303 SPA922 SPA942 SPA525G2 SPA962 SPA501G SPA508G SPA509G SPA512G SPA514G SPA525G-2 SPA942 SPA series