When you have an app using the network, the icon shows a spinning animation just like you see on an iPhone or iPad. You can click on the Loading icon to see which apps are using your network.

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All recent Macs have an Ethernet port, as do many PCs and many printers and other devices, including the Apple TV. All you need to connect two such computers is an Ethernet cable, which is inexpensive. With two devices connected via an Ethernet cable, you can create a local network that lets you transfer files easily.

Many offices have Ethernet jacks in the walls, allowing you to plug in to the corporate network. Check with your IT staff before you do.

For the most part, Ethernet just works. If you need to configure its settings, follow these steps:

1Select System Preferences from the Apple menu and click the Network icon.

You see this window.

Mac See Which Apps Using Network Printer

2Select Built-in Ethernet from the sidebar.

See Mac On Pc Network

The pane you see tells you your Mac’s IP address and the IP address of your router, assuming that it sees it. Write down your router’s IP address; you need it if you want to configure the router.

Mac See Which Apps Using Network Cable

3Click the Advanced button.

Mac Network Settings

You see a pane with a row of buttons labeled TCP/IP, DNS, WINS, AppleTalk, 802.1X, Proxies, and Ethernet. If you’re not a networking guru, don’t mess with any of them unless someone instructs you to do so.