LevelOne USB-0301 — Fast Ethernet USB Network Adapter
10/100 MbpsUSB-A 2.0RJ45Wake-on-LAN
The LevelOne USB-0301 is a compact USB-A 2.0 to RJ45 Fast Ethernet adapter on a short cable, built on the Realtek RTL8152B chipset. It plugs into a USB-A port and gives a laptop, ultrabook, tablet or desktop PC a wired Fast Ethernet (10/100 Mbps) connection through one RJ45 socket. It is plug and play, powered from the USB port, supports Wake-on-LAN, IPv4/IPv6 and IEEE 802.3az Energy Efficient Ethernet, and weighs only 18 g. A cable connection is the practical answer when Wi-Fi is weak or crowded, when a laptop has no network port, when the built-in port has failed, or when a PC needs a second network interface.
Compatibility — check before buying:
Compatibility — check before buying: USB-A plug: laptops with only USB-C ports need a USB-C to USB-A adapter, or the USB-C version of this adapter. Fast Ethernet only: the maximum is 100 Mbps. That is enough for internet up to 100 Mbit/s, printers and remote desktops, but not for fibre broadband above 100 Mbit/s or large file copies — for those choose a Gigabit USB 3.0 adapter. LevelOne lists Windows XP, Vista, 7, 8 and 10 and Mac OS 10.5 to 15; Windows 11 and Linux are not in the official list. Not sure it suits your device? Tell us the laptop or PC model and we check it.
Best For
✓ Laptops without an RJ45 port
✓ Internet connections up to 100 Mbit/s
✓ Network printers and set-up tasks
✓ Replacing a failed onboard port
✓ Second network interface for a PC
✓ Spare adapter for the IT drawer
Key Features
Plug and play
Bus-powered; simple installation on the listed systems.
Wake-on-LAN
Remote wake-up for managed computers.
Energy Efficient Ethernet
IEEE 802.3az lowers power use when the link is idle.
Mac OS up to 15
LevelOne lists macOS versions 10.5 through 15.
Technical Specifications
| Identification |
| Brand |
LevelOne |
| Product |
Fast Ethernet USB Network Adapter, RJ45, USB 2.0 |
| Part Number |
USB-0301 |
| EAN / GTIN |
4015867227954 |
| Colour |
Black |
| Network |
| Ports |
1× RJ45 female |
| Speed |
10/100 Mbps |
| Standards |
IEEE 802.3, 802.3u, 802.3x flow control, 802.3az |
| Chipset |
Realtek RTL8152B |
| Wake-on-LAN |
Yes |
| IP |
IPv4 / IPv6 |
| Host Interface |
| Connector |
USB-A male |
| USB Standard |
USB 2.0 (USB 1.0/1.1 compatible) |
| Power |
USB bus powered |
| Compatibility |
| Operating Systems |
Windows XP, Vista, 7, 8, 10; Mac OS 10.5 to 15 |
| Physical |
| Dimensions |
23 × 16 × 197 mm (incl. cable) |
| Colour |
Black |
| Weight |
18 g |
| Operating Temperature |
10 to 40 °C |
| Certifications |
CE, RoHS |
| In the Box |
| Included |
USB-0301 adapter, quick installation guide |
| Not Included |
Network cable, USB-C/USB-A adapter |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
LevelOne does not publish a warranty term for this model on its product page. Singular’s direct warranty is 1 year, and we support you locally for anything beyond it. |
Frequently Asked Questions
Is 100 Mbps fast enough?
For internet up to 100 Mbit/s, printers and everyday office work, yes. For faster broadband or big file copies, choose a Gigabit USB 3.0 adapter.
Do I need to install a driver?
LevelOne describes it as plug and play. A quick installation guide is included and available for download.
Is it Gigabit?
No. The USB-0301 is 10/100 Mbps Fast Ethernet. For Gigabit choose a USB 3.0 adapter.
Can I use it with a docking station or hub?
Yes, if the hub or dock port is USB 2.0 or newer. Many docking stations already have their own RJ45 port, so check the dock first.
Singular Expert Insight
We suggest the LevelOne USB-0301 for Mac users and office PCs that need a basic wired link up to 100 Mbit/s — LevelOne lists current macOS versions, which not every budget adapter does. For faster lines, choose a Gigabit USB 3.0 model. For more ports or a full desk setup, see our
docking stations; for the other end of the cable, browse
network switches and
routers. More
network cards are in the same category. Local support in Cyprus comes with every order.
Buyer’s Guide
Buy it if
You need a small, low-cost 100 Mbps adapter for Windows or Mac.
Skip it if
Your connection is faster than 100 Mbit/s.
Also consider
Lanberg NC-1000-01 — USB 3.0 Gigabit adapter.