3Com

3Com Corporation was an American manufacturer of computer networking equipment founded in 1979 by Robert Metcalfe and colleagues, building on the Ethernet technology developed at research institutions. The name 3Com is widely cited as standing for Computer, Communication, and Compatibility. The company focused on enabling local area networks through a range of products and services and played a key role in the commercialization and expansion of Ethernet in business networks.

Core products and growth: 3Com produced network interface cards, hubs, switches, routers, and other networking hardware, as well as IP telephony systems in later years. It expanded its portfolio through strategic acquisitions that broadened its reach beyond PC networking into enterprise-grade infrastructure and security. Notable moves included Bridge Communications to strengthen Ethernet offerings and US Robotics to extend into modems and related devices. The company also developed security and intrusion-prevention capabilities, such as the TippingPoint line, integrating them with its broader networking portfolio.

Acquisition by Hewlett-Packard: In 2010, Hewlett-Packard announced the acquisition of 3Com for approximately $2.7 billion in cash. The deal closed later that year, and 3Com’s networking business was integrated into HP’s Networking division, later marketed under the HP Networking brand. Over time, the 3Com name was gradually phased out in favor of HP branding as the two companies integrated their product lines and operations.

Legacy: 3Com is remembered for its early contributions to Ethernet adoption and for building a broad line of networking products that helped shape enterprise networks in the 1980s and 1990s, with its technology and products continuing to influence networking through HP’s later enterprise offerings.