3Com Corporation was an American digital electronics manufacturer best known for its computer network products. The company was co-founded in 1979 by Robert Metcalfe, Howard Charney and others. Bill Krause joined as President in 1981.

A COM3 (or Communications 3) port is a communications channel on the computer that is used to transmit data from hardware devices connected to the PC to the processor.

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3Com offers networking solutions for businesses, including switches, routers, and wireless products.

3Com is a global provider of enterprise and small-business networking solutions, offering network switches, routers, wireless access points and controllers, IP voice systems, and intrusion prevention systems. The company is based in Massachusetts, USA.

2023年5月15日 · This error can occur if two devices that are installed on your computer have been assigned the same I/O ports, the same interrupt, or the same Direct Memory Access channel (either by the BIOS, the operating system, or both). This error message can also appear if the BIOS does not allocate enough resources to the device.

3Com Corporation is a $1.3 billion global enterprise networking solutions provider that sets a new price/performance standard for customers. 3Com has three global brands—H3C, 3Com, and...

2016年9月4日 · Hi: The first UNO that I bought required that I set the port to COM 3. The second UNO that I bought requires that I set the port to COM 4 (I got an error message). I switched ports using the Tools menu and all works. The actual physical location on the master computer (the USB) is the same. Can I make the second computer also look to COM 3?

3Com Corporation is the world's number two provider of computer networking products, systems, and services, trailing only Cisco Systems, Inc. A pioneering networking company, particularly in the area of Ethernet network adapters, 3Com offers products and services for local area networks (LANs), wide area networks (WANs), and the Internet.

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