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Connect Two Home Computers for File Sharing

The simplest kind of home network contains exactly two computers. You can use this kind of network to share files, a printer or another peripheral device, and even an Internet connection. To connect two computers for sharing these and other network resources, consider the options described below.

Connecting Two Computers Directly With Cable

The traditional method to network two computers involves making a dedicated link by plugging one cable into the two systems. Several alternatives exist for networking two computers in this manner:

Ethernet crossover cable

Null modem serial cable or parallel peripheral cable

Special-purpose USB cables

Ethernet - Of the above choices, the Ethernet method is preferred as it supports a reliable, high-speed connection with minimal configuration required. Additionally, Ethernet technology offers the most general-purpose solution, allowing networks with more than two computers to be built fairly easily later. If one of your computers possesses an Ethernet adapter but the other has USB, an Ethernet crossover cable can still be used by first plugging a USB-to-Ethernet converter unit into the computer's USB port.

See also: Ethernet crossover cables

Serial and parallel - This type of cabling, calledDirect Cable Connection (DCC) when using Microsoft Windows, offers lower performance but offers the same basic functionality as Ethernet cables. You may prefer this option if you have such cables readily available and network speed is not a concern. Serial and parallel cables are never used to network more than two computers.

USB - Ordinary USB cables must not be used to connect two computers directly to each other. Attempting to do so can electrically damage the computers! However, special USB cables designed for direct connection exist that can be used safely. You may prefer this option over others if your computers lack functional Ethernet network adapters.

To make dedicated connections with Ethernet, USB, serial or parallel cables requires

each computer have a functioning network interface with an external jack for the cable, and

the network settings on each computer appropriately configured

One phone line or power cord cannot be used to directly connect two computers to each other for networking.

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What Is a Wireless Network?: The Basics

What Is a Wireless Network?: Five Questions to Start With

What is a wireless network? How is it different from a wired network? And what are the business benefits of a wireless network? The following overview answers basic questions such as What is a wireless network?, so you can decide if one is right for your business.

What Is a Wireless Network?

What is a wireless network, exactly?

A wireless local-area network (LAN) uses radio waves to connect devices such as laptops to the Internet and to your business network and its applications. When you connect a laptop to a WiFi hotspot at a cafe, hotel, airport lounge, or other public place, you're connecting to that business's wireless network.

What Is a Wireless Network vs. a Wired Network?

A wired network connects devices to the Internet or other network using cables. The most common wired networks use cables connected to Ethernet ports on the network router on one end and to a computer or other device on the cable's opposite end.

What Is a Wireless Network? Catching Up with Wired Networks

In the past, some believed wired networks were faster and more secure than wireless networks. But continual enhancements to wireless networking standards and technologies have eroded those speed and security differences.

What Is a Wireless Network?: The Benefits

Small businesses can experience many benefits from a wireless network, including:

• Convenience. Access your network resources from any location within your wireless network's coverage area or from any WiFi hotspot.
• Mobility. You're no longer tied to your desk, as you were with a wired connection. You and your employees can go online in conference room meetings, for example.
• Productivity. Wireless access to the Internet and to your company's key applications and resources helps your staff get the job done and encourages collaboration.
• Easy setup. You don't have to string cables, so installation can be quick and cost-effective.
• Expandable. You can easily expand wireless networks with existing equipment, while a wired network might require additional wiring.
• Security. Advances in wireless networks provide robust security protections.
• Cost. Because wireless networks eliminate or reduce wiring costs, they can cost less to operate than wired networks.

Find out how wireless networking products from Cisco can help your business.

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