This 5-pack of Polycom 24V powers is a great addition to your office phone system. With a capacity of 2200-17877-001/1465-44256-001, these VoIP systems are perfect for your communication needs. The brand, Polycom, is known for its high-quality products and this model, SPA12A24B, is no exception. Made in China, these powers are reliable and will ensure that your phone system is always up and running.