How to Choose a USB-C Adapter or Hub: HDMI, DisplayPort, Ethernet and USB-A Explained

The short answer: pick a USB-C adapter by the job it has to do (video, wired network, older USB-A devices, or several ports at once), then check the numbers on the product page: the video resolution and refresh rate, the data speed, and the charging wattage. On PrimeCables.ca, single-purpose USB-C adapters start at $4.95 and 5-in-1 and 7-in-1 hubs are $12.95 and $17.55 as of October 30, 2026.

Most modern laptops, tablets and phones have shrunk their ports down to USB-C. That is tidy, until you need to plug in an HDMI monitor, an Ethernet cable or a USB flash drive and discover you have nothing to connect them to. This guide explains how to choose the right USB-C adapter or hub, what the specifications on a product page mean, and which PrimeCables adapters fit which job.

The problem: one port, many different jobs

A USB-C port is a connector shape, not a promise of what the port can do. Depending on the device, it may carry data, video, charging, or only some of these. Before you buy an adapter, find your device’s specifications (in the manual or on the maker’s website) and look for three things: whether the port supports video output (often listed as DisplayPort Alt Mode, or Thunderbolt), whether it supports charging, and its data speed. An adapter can only use what the port provides.

What to check before you buy

1. Start with the job, not the connector

Write down what you want to plug in. The answer usually falls into one of four groups:

• A monitor, TV or projector: you need a USB-C to HDMI or USB-C to DisplayPort adapter, depending on the input on the screen.
• A wired network: you need a USB-C to RJ45 Ethernet adapter. A wired connection can be steadier than Wi-Fi in a room with a weak signal.
• Older USB-A devices such as a mouse, a flash drive or a printer cable: you need a USB-C to USB-A adapter.
• Several of these at once: a multiport hub is easier than carrying separate adapters.

2. Match the video resolution and refresh rate

If the adapter is for a screen, read the resolution and refresh rate on the page, written like “4K@60Hz” (4K at 60 frames per second) or “4K@30Hz”. 60Hz looks smoother for scrolling and moving windows; 30Hz is usually enough for static documents and slides, but the cursor can feel less smooth. Both the adapter and your device’s port, and the monitor itself, need to support the mode you want. Multiport hubs often list a lower HDMI refresh rate than single-purpose video adapters, so compare the figures. If you are also choosing the cable on the other side, our guide to HDMI cables for 4K 120Hz explains the differences.

3. Check the data speed

Data speed decides how long a file copy takes. In the specifications, USB 3.0 is listed at 5 Gbps and USB 2.0 at 480 Mbps. If you plan to move large files or use an external drive, use a USB 3.0 port. USB 2.0 ports are fine for a mouse, keyboard or a printer. For wired Ethernet, look at the line rating: a gigabit adapter is listed at 1000 Mbps.

4. If it is a hub, look at the charging port

Many hubs include a power delivery (PD) port so you can charge the laptop through the hub. The page lists the maximum PD wattage. Your laptop charger and your laptop have their own wattage, and the hub can only pass on what the charger supplies, so check your laptop’s charging requirement and use a charger that meets it.

5. Think about size and how you will use it

A small adapter on a short cable stays in a laptop bag; a hub with more ports is better left on the desk. Check the dimensions and cable length on the page, and count the ports you need now plus one spare.

USB-C adapters and hubs on PrimeCables.ca

Specifications are taken from each product page. Prices are as of October 30, 2026; the Ethernet adapter and both hubs are on promotional prices that end on November 3, 2026, so check the product page for the current price.

Which one suits whom

USB-C to HDMI Adapter, 4K@60Hz ($9.99). For connecting a laptop or tablet to an HDMI monitor, TV or projector. The page lists 4K@60Hz output. Pick this if your screen has an HDMI input and you mostly need video.

USB-C to DisplayPort 4K Adapter ($9.95). The same idea for monitors with a DisplayPort input, which is common on desktop monitors. The page lists 4K@60Hz output.

USB-C to RJ45 Gigabit Ethernet Adapter ($12.95). For laptops without an Ethernet port, such as thin laptops, when you want a wired connection for video calls, large downloads or a spot with weak Wi-Fi. The page lists speeds up to 1000 Mbps and says it works with slower 100/10 Mbps networks too. To get the full speed you need a gigabit network and a suitable cable; see our guide to Cat6, Cat6a and Cat8 Ethernet cable.

USB Type C to USB A 3.0 Adapter ($4.95). A small, inexpensive adapter for plugging a USB-A flash drive, mouse or dongle into a USB-C port. The page lists a 5 Gbps transfer speed and a reversible USB-C design.

5-in-1 USB-C Hub ($12.95). A compact hub for a basic desk or travel setup: one USB 3.0 port, two USB 2.0 ports, a PD port (listed at 60/87/100W) and an SD/TF card reader. It does not list a video output, so look elsewhere if you need a monitor connection.

7-in-1 USB-C Hub ($17.55). One hub for a laptop that needs a monitor, a drive and charging at once. The page lists a 4K HDMI output at 30Hz, a USB 3.0 port (5 Gbps), a USB 2.0 port, a USB-C data port, a PD port up to 100W and SD/TF card slots, in an aluminum alloy shell. At 30Hz it suits documents, spreadsheets and presentations; if you want 4K at 60Hz, use a dedicated adapter such as the HDMI or DisplayPort ones above.

You can browse more options in the USB Type-C Adapters and USB Hubs sections. If you also need a cable, read which USB-C fast charging cable to buy.

Frequently asked questions

Will any USB-C to HDMI adapter work with my laptop?

Not necessarily. The adapter needs the laptop’s USB-C port to support video output. Check your laptop’s specifications for DisplayPort Alt Mode or Thunderbolt, or look for a video symbol next to the port.

Can I charge my laptop through a hub?

If the hub has a PD port, you plug your laptop charger into that port and the hub passes power to the laptop. The wattage listed on the product page is the most the hub supports; your charger and laptop set the actual charging power.

Why does my external drive copy slowly through an adapter?

Check which port you used. A USB 2.0 port is listed at 480 Mbps while USB 3.0 is listed at 5 Gbps. Plug the drive into a USB 3.0 port and make sure the drive and your laptop’s port also support the faster speed.

Prices as of October 30, 2026. Check each product page for the current price, availability and specifications.