On your Mac, choose Apple menu > System Preferences, then click Network. Open Network preferences for me. Select a service, such as Ethernet or Wi-Fi, in the list on the left. If you don’t Open Hardware Network Switch Java see the service you expect, click the Add button, choose an interface for the service, such as Ethernet or Wi-Fi, give the service a name, then click Create. Enter the network settings for the service.  Some network connection services, such as Wi-Fi or Bluetooth, require specific hardware. Use System Information (located in Applications > Utilities) to make sure you have the required hardware installed to set up that service. Open System Information for me. See alsoChange advanced Wi-Fi options on Mac Change advanced hardware options on Mac. Helpful? Yes. A network switch (also called switching hub, bridging hub, and, by the IEEE, MAC bridge) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer (layer 2) of the OSI model. Some switches can also forward data at the network layer (layer 3) by additionally incorporating routing functionality. Such. On your computer, open System Preferences. To do so, click on the Apple logo on the top left corner of the screen (in the menu bar) and select System Preferences. Navigate to Network. Select either Ethernet (Wired) or WiFi (Wireless) on the left panel, and then select Advanced on the bottom right. The hardware address will be listed at the bottom. Note that for Macs without Ethernet ports (any laptop with a Retina display, or equivalently without a CD drive), if you would like to register your device for wired network access, you must first get an Ethernet adapter for your computer and plug i.

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