System and network troubleshooting often involves checking and obtaining information about ports to ensure functionality and determine the source of problems. Learn handy tips to help keep systems ...

When someone talks about wanting to check open ports on a computer, they usually aren't talking about physical ports, like where you might plug in a monitor or a USB stick. Instead, they're ...

Opening ports globally in Zone Alarm Free or Pro There are times that you want Zone Alarm to allow system wide access to certain ports on your computer, rather than on a per program basis.

Test if Firewall is blocking a Port. Check which Ports are being used. Also learn how to check which process or service is using the open port.

If you're having trouble connecting to League of Legends, you may need to open a port. It can help improve connection quality by allowing our servers and your computer to communicate more ...

How to open a port for incoming traffic in Windows Firewall Windows Firewall is designed as a security measure for your PC.

How to open an application’s port in OS X firewall If you have the OS X firewall enabled, you may install a new app that requires you to allow it access through the firewall.

To determine the power, current, and voltage of a USB socket, Windows on-board tools, freeware, and test sticks from $10 can be used.

Do you have enough USB ports for all the things you want to plug into your computer? Here are all the ways you can count them to find out an exact number.

What does opening a port actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.