SG500X 48 Port Gigabit PoE - SG500X-48P-K9-NA Cisco SG500X-48P 48-Port Gigabit PoE with 4-Port 10-Gigabit Stackable Managed Switch Cisco (NASDAQ: CSCO) enables people to make powerful connections- whether in business, education, philanthropy, or creativity. Headquartered in San Jose, California, it designs and sells networking and communications technology and services under five brands, namely Cisco, Linksys, WebEx, IronPort and Scientific Atlanta. Cisco was founded in 1984 by a small group of computer scientists from Stanford University. Since the company's inception, Cisco engineers have been leaders in the development of Internet Protocol (IP)-based networking technologies. Initially, Cisco manufactured only enterprise multi-protocol routers but gradually diversified its product... Less