Minthouz MT-NWU341G USB-C to Ethernet Adapter Review UK (2026) – Tested

Modern laptops keep getting thinner, which means fewer ports. WiFi’s brilliant until you’re in a hotel with dodgy wireless or need to transfer large files without waiting an eternity. That’s when you realise you need a proper wired connection. But here’s the problem: not all USB-C to Ethernet adapters deliver the speeds they promise, and some get hot enough to fry an egg.

I’ve spent two weeks testing the Minthouz MT-NWU341G USB-C to Ethernet adapter with my MacBook Pro and a Windows laptop. I’ve transferred files, run speed tests, and yes, measured how hot it gets during extended use. Here’s what you actually need to know before buying one.

WiFi 6 is fast on paper. In reality? You’re sharing bandwidth with everyone else in the building, dealing with interference from microwaves and neighbouring networks, and praying the hotel router doesn’t decide to restart itself mid-transfer. Of course, upgrading your WiFi adapter can help improve wireless performance, but wired Ethernet is boring, old-fashioned, and absolutely reliable. The problem is finding an adapter that actually delivers on its speed claims without needing a separate power brick.

The adapter is compact, roughly the size of a USB stick but chunkier. Aluminium body with a matte finish that resists fingerprints reasonably well. The cable feels decent quality with proper strain relief at both ends. There’s a small LED indicator on the side that shows connection speed: green for 5Gbps, amber for everything else.

The LED indicator is useful. Green means you’re getting full 5Gbps speeds (assuming your network supports it). Amber means it’s negotiated down to 2.5Gbps, 1Gbps, or slower. In practice, I saw green most of the time when connected to my 2.5Gbps switch, amber when plugged into older 1Gbps equipment.

Windows users? Different story. You need to download the RTL8157 driver from Minthouz’s website (or Realtek’s site if you want the latest version). The adapter will work at basic speeds without drivers, but you won’t get the full 5Gbps capability. Installation is straightforward enough if you’re comfortable downloading and running exe files, but it’s an extra step that some users will find annoying.

I tested with a MacBook Pro M2, a Dell XPS 13, and a Lenovo ThinkPad. All worked fine once drivers were sorted. Also tried it with an iPad Pro (works) and my Steam Deck (also works, surprisingly). The product description says it doesn’t work with Nintendo Switch, and I can confirm that’s accurate. My Switch didn’t recognise it at all.

Short answer: Yes, but only if your entire network chain supports it.

I tested with three different setups:

Setup 1: 5Gbps switch to NAS
Connected to my QNAP NAS via a 5Gbps-capable switch. File transfers averaged 550-580 MB/s, which translates to roughly 4.5Gbps. That’s proper fast. Transferred a 25GB video file in about 45 seconds. The adapter stayed stable throughout, no speed drops or disconnections.

Setup 2: 2.5Gbps switch to NAS
More realistic for most home setups. Speeds maxed out at around 280-290 MB/s (about 2.3Gbps). Still way faster than WiFi, and perfectly stable. LED showed amber as expected.

Setup 3: Standard 1Gbps router
This is what most people have. Speeds hit the 1Gbps ceiling at around 115-118 MB/s. Not exciting, but that’s the network bottleneck, not the adapter.

For context, my WiFi 6 connection on the same network typically gives me 40-60 MB/s on a good day, with random drops and spikes. The wired connection is consistently faster and more stable.

I tested with my MacBook Pro’s 96W charger. The laptop charged at full speed whilst transferring files, no issues. The adapter gets noticeably warmer when you’re using both ports simultaneously, but it doesn’t throttle or disconnect.

One thing to note: the USB-C port is quite close to the Ethernet port. If you’ve got a chunky USB-C cable or a right-angled connector, it might be a tight squeeze. My Apple charging cable fitted fine, but a thicker third-party cable I tried was a bit awkward.

In practice, yes, it gets warm. During a 30-minute sustained file transfer at 5Gbps, the aluminium body reached 48°C. That’s warm enough to notice if you touch it, but not uncomfortable. When I was also using the pass-through charging, it peaked at 52°C. Still functional, but definitely toasty.

The important bit: it didn’t throttle speeds or disconnect, even when properly warm. Some cheaper adapters I’ve tested will drop to 1Gbps when they overheat. This one stayed stable throughout. The aluminium casing is doing its job.

Large File Transfers: Backing up my photo library to my NAS. 180GB of RAW files. Over WiFi this would take hours and probably fail halfway through. Over 5Gbps Ethernet? Done in about six minutes. The adapter stayed connected throughout, no babysitting required.

Video Calls: Used it for a week of back-to-back Zoom calls. Rock solid connection, no dropouts, consistent quality. The adapter barely got warm during calls since video conferencing doesn’t use much bandwidth.

Gaming (Steam Deck): Downloaded a 40GB game on my Steam Deck. Over WiFi this usually takes 30-40 minutes. With the adapter, about 12 minutes. The Deck recognised it immediately, no driver faff.

• Your network only supports 1Gbps (you’re paying for speed you can’t use)
• You need something for a Nintendo Switch (not compatible)
• You’re on a tight budget and basic Ethernet is fine (cheaper options available)
• You’re uncomfortable installing Windows drivers