How to Use a USB-C to Ethernet Adapter?

Plug the adapter into your USB-C port, connect an Ethernet cable to your router, and your device recognizes the wired network automatically.

Wired internet beats Wi-Fi for stable speeds, lower latency, and fewer dropouts. A USB-C to Ethernet adapter makes that possible on modern laptops, tablets, and some phones. The setup takes under a minute, but a few details — like picking the right adapter and prioritizing the connection — make the difference between plug-and-play and frustration. Here’s exactly how to get it working.

What You Need Before You Start

You need three things: the adapter, an Ethernet cable, and a network source like a router, modem, or wall jack. Most recent laptops and tablets have USB-C ports that support this. Apple Support confirms that a USB-C to Ethernet adapter works with a Mac using an Ethernet cable — and if the Mac already has an Ethernet port, no adapter is needed. One compatibility check matters: the adapter only works if your device’s port and OS support USB network adapters. Older setups may need a driver, and some adapters state OS restrictions, so check the product page before buying.

Step-by-Step: Connecting the Adapter

The physical setup is straightforward and works the same across Windows, macOS, ChromeOS, and most Linux systems.

1. Plug the USB-C connector into your computer’s USB-C port. It fits only one way, so align the oval shape correctly.

2. Connect the Ethernet cable to the adapter’s RJ45 port. You’ll hear a click when it locks in place.

3. Connect the other end of the Ethernet cable to your router, modem, or wall jack.

4. Wait a few seconds for the system to recognize the wired connection. A notification appears or the network icon changes.

Your device shows a wired connection instead of (or alongside) Wi-Fi, and web pages load without asking for a password.

Prioritizing Ethernet Over Wi-Fi

If both Wi-Fi and Ethernet are active, your computer may keep using Wi-Fi. You can force Ethernet to the top of the list in network settings. On macOS, open System Settings > Network, click the ellipsis menu, choose Set Service Order, and drag Ethernet above Wi-Fi. On Windows, go to Settings > Network & Internet > Advanced network settings > More network adapter options, then use the Advanced tab to adjust binding order. On most Linux desktops, NetworkManager lets you set connection priority in the wired connection’s settings. This step matters most for gamers and streamers wanting consistent low latency; if you only need occasional wired speed, skipping it is fine.

Speeds, Power Passthrough, and Compatibility

Adapters come in different speed classes. A standard Gigabit adapter handles 10, 100, and 1000 Mbps, covering most home internet plans. Faster 2.5 Gbps adapters exist — the Belkin USB-C to 2.5Gb Ethernet Adapter supports 10, 100, 1000, and 2500 Mbps — but they only help if your router and plan exceed 1 Gbps. Some adapters include a USB-C charging passthrough port, letting you charge the host computer and power the adapter simultaneously — useful on laptops with limited ports. TP-Link’s UE302C documentation notes the adapter can “charge for the host computer and supply power for the adapter simultaneously.”

Compatibility varies by device. Some don’t work with gaming consoles, and USB-C devices won’t work through Thunderbolt 2 cables or cross-adapters — only Thunderbolt devices work in that setup. Check the adapter’s listed compatibility before buying. No carrier plan or subscription is needed: Ethernet is a local wired network link through your router or wall jack, not a cellular feature, so it works with any internet service.

If you’re comparing models, our tested USB-C Ethernet adapter roundup breaks down top picks by speed, build quality, and price. One last tip: if the connection doesn’t appear after plugging in, restart your device or check for a driver update. Apple’s guidance on Ethernet connections covers Mac-specific setup, and most manufacturers publish similar docs.