BENFEI
BENFEI 4in1 USB-C/USB 3.0 to Ethernet Adapter
Bottom line: The BENFEI 4in1 USB-C/USB 3.0 to Ethernet Adapter ($16.99 on Amazon as of 2026-10-06): Gigabit ethernet plus three USB 3.0 ports from one connector; main trade-off: no power delivery passthrough, so it occupies a charging port on single-port laptops.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Gigabit ethernet plus three USB 3.0 ports from one connector
- ✓ Ships with both USB-C and USB-A plugs, no second dongle needed
- ✓ Steps down to 100/10 Mbps for older switches and legacy gear
- ✓ 5 Gbps USB 3.0 throughput, backward compatible with USB 2.0 and 1.1
Cons
- ✗ No power delivery passthrough, so it occupies a charging port on single-port laptops
- ✗ Bus-powered hub can brown out with three high-draw USB devices at once
- ✗ Aluminum shell runs warm during long gigabit transfers
- ✗ No HDMI or SD card reader, unlike wider docks at similar prices
Manufacturer description
The BENFEI 4-in-1 USB-C to Ethernet adapter solves a specific problem for anyone reviving an older machine or working from a modern laptop that dropped its RJ45 port: it restores wired gigabit networking and adds three USB 3.0 ports from a single connector. The included USB-C and USB-A plug options mean it works with an iPhone 15, a MacBook Air or Pro from 2019 through 2023, a Dell XPS 13/15, Surface Book 2, Chromebook, or a Lenovo Yoga without a separate dongle for each. Ethernet negotiates up to 1 Gbps and steps down to 100/10 Mbps, so it slots into legacy switches and older router…
SpecPicks Verdict
SpecPicks scored BENFEI 4in1 USB-C/USB 3.0 to Ethernet Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the retro networking cards category. BENFEI's retro networking cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for retro networking cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will this work with my MacBook Air without installing drivers?
Yes. BENFEI lists the adapter as plug-and-play and specifies compatibility with MacBook Air and Pro models from 2019 through 2023, along with iPad 2021-2023.
Does it actually hit full gigabit speeds?
The ethernet port is rated up to 1 Gbps and falls back to 100 Mbps, 10 Mbps, or 1 Mbps depending on the network it connects to. Real throughput depends on your router and cabling.
Can I use this with an older laptop that only has USB-A?
Yes. The adapter ships with both a USB Type-C and a USB Type-A plug design, so it connects to legacy USB-A laptops as well as modern USB-C devices.
How fast are the three USB 3.0 ports?
Each USB 3.0 port supports 5 Gbps transfer speeds, roughly 10x USB 2.0, and remains backward compatible with USB 2.0 and 1.1 peripherals.
What kind of warranty does BENFEI offer?
BENFEI includes an unconditional 18-month warranty with the adapter. Check the current product listing to confirm terms before purchase.
Key Features
- Feature - BENFEI USB Type-C/Type-A Network Adapter provides a plug-and-play gigabit ethernet connection between USB-C devices and wired network, expands your laptop with 3 additional USB 3.0 Port.
- SuperSpeed - Obtain stable network connection speeds up to 1 Gbps, downward compatible with 100Mbps/10Mbps/1Mbps, take your internet surfing up to the next level. Larger downloads, maximum velocity, and no more interruption. Sync data in seconds with this USB 3.0 Hub splitter. USB 3.0 provides you 5Gbps data transfer speeds and is 10x faster than USB 2.0. Backward compatible with USB 2.0, 1.1.
- Design - With USB Type-C/Type-A plug design, provide a easy connection option to laptop/phone/pad. User-friendly non-slip design for easier plug and unplug. Braided nylon cable for extra durability with a tested 10000+ bend lifespan. Premium aluminium alloy casing, sturdy exterior and heat-resistant connectors give this hub incredible durability.
- Wide Compatibility - Compatible with USB-C devices like iPhone 15/15Plus/15Pro/15Pro Max, MacBook Air/Pro iPad 2023/2022/2021, Dell XPS 13/15, Surface Book 2, Pixelbook, Chromebook, Asus ZenBook, Lenovo Yoga 720/910/920, Samsung S8/S8 Plus/Note 8/Note 9, Samsung Tablet Tab A 10.5, Pixel / Pixel 2, and many others USB-C laptops, tablets, and smartphones.
- 18 MONTH WARRANTY - Exclusive BENFEI Unconditional 18-month Warranty ensures long-time satisfaction of your purchase; Friendly and easy-to-reach customer service to solve your problems timely
Full Specifications
| Brand | BENFEI |
|---|---|
| Color | Gray |
| Unit Count | 1.0 Count |
| Connectivity | USB-C |
| Model Number | 000350grey |
| Compatibility | iOS |
| Built-In Media | Ethernet Adapter |
| Connection Type | Wired |
| Mfr Part Number | 000350grey |
| Number of Ports | 3 |
| Special Feature | Plug and Play |
| Total Usb Ports | 3 |
| Compatible Devices | Laptops, Smartphones, Tablets |
| Data Transfer Rate | 5 Gigabytes Per Second |
| Enclosure Material | Aluminum |
| Hardware Interface | Ethernet, USB 3.0, USB 3.0 Type A, USB Type C |
| Additional Features | Plug and Play |
| Item Dimensions L x W x H | 3.78"L x 0.79"W x 0.39"H |
| Full listing title | BENFEI 4in1 USB-C/USB 3.0 to Ethernet Adapter with 3*USB 3.0 Ports Compatible for iPhone 15 Series, MacBook Pro/Air 2023/2022/2021/2020/2019 and More |
Ready to buy?
BENFEI 4in1 USB-C/USB 3.0 to Ethernet Adapter with 3*USB 3.0 Ports Compatible for iPhone 15 Series, MacBook Pro/Air 2023/2022/2021/2020/2019 and More is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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