USB C to 5Gbps Ethernet adapter

[Enquiries]

Hi,

Could you please recommend a USB-C to Ethernet adapter that can do up to 5Gbps speed, supports jumbo frames up to 9K and if possible, supports MAC address passtrough. The last one is not essential but can be a bonus.
Max budget £70.
If not available, will there be a new model from established suppliers?

Kind regards

Leslie

[ed]

For a USB-C to Ethernet adapter that supports 5Gbps, jumbo frames up to 9K, and ideally MAC address passthrough, there are a few solid options — though it’s worth noting that this category still isn’t as broad as 2.5GbE, especially within a £70 budget.

Recommended Option:

Sabrent NT-SS5G (USB-C to 5GbE Adapter)
• Chipset: AQC111U (Aquantia/Marvell)
• Speed: Supports 100M/1G/2.5G/5GbE
• Jumbo Frames: Yes, up to 9K
• OS Compatibility: Windows, macOS, Linux
• MAC Passthrough: Often supported, especially on macOS, though may depend on system firmware
• Price: ~£65–£70 (depending on retailer)

This one has proven reliable and is one of the few widely available adapters with true 5GbE support and jumbo frame compatibility. It’s also one of the better-supported options across operating systems.

Other Notable Mentions:
• QNAP QNA-UC5G1T – Based on the same Aquantia chipset, very solid, sometimes hovers above £70.
• StarTech USB-C 5G Adapter – More enterprise-oriented, often exceeds your budget but built well and supports full jumbo frames.

As for MAC address passthrough, it’s inconsistently supported across USB NICs in general. On some systems, it works out of the box; on others, it requires driver-level support or gets blocked by OS limitations. The Aquantia-based models have had some success in passthrough modes, especially on macOS and some Linux distros, but it’s not officially guaranteed.

At the moment, no major new models have been announced from Synology, QNAP, or similar vendors in this space. Most manufacturers are focused on 2.5GbE due to cost and compatibility, but 5GbE remains available via Aquantia-based adapters like the one above.

[carsodseeen]

The Sabrent NT-SS5G (or NT-C5GA) is your best bet within your budget for a 5Gbps USB-C to Ethernet adapter that supports 9K jumbo frames and has the highest likelihood of offering MAC address passthrough, though it's not a guaranteed feature. Double-check current pricing and availability in the UK for these models. If MAC address passthrough is absolutely critical and the Sabrent doesn't work, you might need to consider more expensive, business-grade docking solutions that explicitly advertise this feature.

[ryansmith53]

I’ve looked into the Sabrent NT-SS5G as suggested, and it seems to tick nearly all the boxes I need, especially with jumbo frame support and strong cross-platform compatibility. I’ll likely go with it unless the price suddenly jumps.
Out of curiosity, has anyone here had direct experience using MAC address passthrough with this adapter on Linux (particularly Ubuntu or Debian)? I understand support varies, but any real-world feedback would be appreciated.

[skomja00]

I am using the QNAP HBS3 app to backup to a Seagate 1big dock with a 10TB Crimson Wolf Pro. 

I cannot get USB speeds above 250MB/s ~ 2Gbps. Any suggestions?

The Storage and Snapshots External Storage on the NAS says the connection type is USB 3.2 Gen 2

The NAS is a QNAP TS-464-8G-US with 4x Seagate IronWolf 8TB and upgraded memory using 2x Crucial 16GB DDR4-3200 SODIMM 1.2V CL22

The connection is from the front USB on the NAS (above one-touch copy button) wired to the 1big Dock Thunderbolt 3 port. The 1big dock has a separate power supply but will not power up unless something is connected to the Thunderbolt port. I get the same results using the back USB port on the NAS. 

I've tried flipping the USBC end of the cable "right side up" and "upside down". Apparently that may somehow make a difference I've read online. Doesn't seem to help.

The cable I am using is a Cable Matters [USB-IF Certified] 10Gbps Gen 2 USB A to USB C Cable - 3.3 ft

Is it me or USB?

[walterlouis]

Hi,

Could you please recommend a USB-C to Ethernet adapter that can do up to 5Gbps Block Blast speed, supports jumbo frames up to 9K and if possible, supports MAC address passtrough. The last one is not essential but can be a bonus.
Max budget £70.
If not available, will there be a new model from established suppliers?

Kind regards

Leslie

The Sabrent NT-SS5G is a solid pick under £70, supports 5Gbps and 9K jumbo frames, with possible MAC passthrough depending on your system. No new major models are expected soon.

[HEICX]

对于支持 5Gbps、高达 9K 巨型帧以及理想情况下的 MAC 地址直通的 USB-C 转以太网适配器，有一些可靠的选择 - 但值得注意的是，此类别仍然不如 2.5GbE 那么广泛，特别是在 70 英镑的预算内。
推荐选项：
Sabrent NT-SS5G（USB-C 转 5GbE 适配器）
• 芯片组：AQC111U（Aquantia/Marvell）
• 速度：支持 100M/1G/2.5G/5GbE
• 巨型帧：是的，高达 9K
• 操作系统兼容性：Windows、macOS、Linux
• MAC 直通：通常受支持，尤其是在 macOS 上，但可能取决于系统固件
• 价格：~65–70 英镑（取决于零售商）
这款适配器已被证明是可靠的，并且是少数真正支持 5GbE 和巨型帧兼容性的广泛使用的适配器之一。它也是跨操作系统支持更好的选项之一。
其他值得一提的：
• QNAP QNA-UC5G1T – 基于相同的 Aquantia 芯片组，非常稳定，有时价格在 70 英镑以上。
• StarTech USB-C 5G 适配器 – 更面向企业，通常超出您的预算，但构造精良并支持完整的巨型帧。
至于 MAC 地址直通，它通常在 USB NIC 上获得的支持不一致。在某些系统上，它开箱即用；在其他系统上，它需要驱动程序级支持或受到操作系统限制的阻止。基于 Aquantia 的型号在直通模式下取得了一些成功，尤其是在 macOS 和一些 Linux 发行版上，但这并不能得到官方保证。
目前，Synology、QNAP 或该领域的类似供应商尚未发布任何主要的新型号。由于成本和兼容性，大多数制造商都倾向于 2.5GbE，但通过基于 Aquantia 的适配器（如上图所示）仍然可以使用 5GbE。
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---

For a USB-C to Ethernet adapter that supports 5Gbps, jumbo frames up to 9K, and ideally MAC address passthrough, there are a few solid options — though it’s worth noting that this category still isn’t as broad as 2.5GbE, especially within a £70 budget.
Recommended Option:
Sabrent NT-SS5G (USB-C to 5GbE Adapter)
• Chipset: AQC111U (Aquantia/Marvell)
• Speed: Supports 100M/1G/2.5G/5GbE
• Jumbo Frames: Yes, up to 9K
• OS Compatibility: Windows, macOS, Linux
• MAC Passthrough: Often supported, especially on macOS, though may depend on system firmware
• Price: ~£65–£70 (depending on retailer)
This one has proven reliable and is one of the few widely available adapters with true 5GbE support and jumbo frame compatibility. It’s also one of the better-supported options across operating systems.
Other Notable Mentions:
• QNAP QNA-UC5G1T – Based on the same Aquantia chipset, very solid, sometimes hovers above £70.
• StarTech USB-C 5G Adapter – More enterprise-oriented, often exceeds your budget but built well and supports full jumbo frames.
As for MAC address passthrough, it’s inconsistently supported across USB NICs in general. On some systems, it works out of the box; on others, it requires driver-level support or gets blocked by OS limitations. The Aquantia-based models have had some success in passthrough modes, especially on macOS and some Linux distros, but it’s not officially guaranteed.
At the moment, no major new models have been announced from Synology, QNAP, or similar vendors in this space. Most manufacturers are focused on 2.5GbE due to cost and compatibility, but 5GbE remains available via Aquantia-based adapters like the one above.
The website [Heicx]( https://www.heicx.com/ )  provides services for HEIC files, such as:
1.[Heic to JPG ]( https://www.heicx.com/heic-to-jpg/ )
2.[Heic to MP4 ]( https://www.heicx.com/heic-to-mp4/ )
3.[Heic to RAW ]( https://www.heicx.com/heic-to-raw/ )
4.[Heic Viewer]( https://www.heicx.com/heic-viewer/ )
5.[open heic file]( https://www.heicx.com/blog/The-Ultimate-...EIC-Files/ )
6.[Domain Availability Checker]( https://www.domainaide.com/ ) - Check domain availability across multiple top-level domains.
7.[Domain Name Generator]( https://www.domainaide.com/domain-name-generator/ ) - Generate domain names of different styles for you.
8.Explore the world of [Sprunki]( https://www.sprunki.fan/ ),a music creation game inspired by Incredibox. Download the game, meet characters, join the community, and create amazing music mixes. Discover fanart, lore, and more!
9.[Audio Cutter]( https://www.audiocutter.org/ ): Trim and edit audio files easily with our intuitive online tool. Supports multiple formats and precise cutting. Get started now!
10.[mp3 cutter]( https://www.mp3cut.online )
11.[Key and BPM Finder ]( https://www.audiocutter.org/key-bpm-finder/ )
12.[Audio Looper]( https://www.audiocutter.org/audio-looper/ )
13.[Mp3 Joiner]( https://www.audiocutter.org/mp3-joiner/ )
14.Our[AI Image Generator]( https://www.aiimagex.com/ ) is a powerful tool that allows you to transform your ideas into stunning visuals with just a few clicks. Whether you're a designer, marketer, or simply someone with a creative spark, our AI-powered platform enables you to generate high-quality, unique images tailored to your needs.
15.Our[AI Image Generator]( https://www.aiimagegeneratorx.com/ ) is a powerful tool that allows you to transform your ideas into stunning visuals with just a few clicks. Whether you're a designer, marketer, or simply someone with a creative spark, our AI-powered platform enables you to generate high-quality, unique images tailored to your needs.
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[車載オーディオ空間音場補正]( https://www.igreenapple.com/jp/products.html )
[车载音频空间声场矫正]( https://www.igreenapple.com/products.html )
17.[AI Describe Picture]( https://www.aidescribepicture.com/ ): Free tool to analyze and describe any image in detail. Get accurate descriptions for photos, artwork, and diagrams with AI technology.
18.[Restore old photos]( https://www.restoreoldphotos.online/ )  with AI online. Upload your old photos and let our AI restore them to their original quality.