UGREEN exact SKU 40322
A dedicated USB-C connection for Gigabit Ethernet
A compact CM483 adapter using the documented AX88179A controller, with a braided host lead and clear device, driver and cabling limits.
01 · Product introduction
Overview
UGREEN 40322 USB-C to Gigabit Ethernet Adapter (CM483) is a compact CM483 adapter using the documented AX88179A controller, with a braided host lead and clear device, driver and cabling limits.
This exact-model guide separates link-rate ceilings from real throughput, explains what the entire cable or radio path must support, and states when operating-system or driver compatibility is conditional.
Research combines exact live UGREEN India product media with exact-model primary UGREEN material. Similar-looking adapters can use different chipsets, radios, speed ceilings and software.
Source reconciliation
Exact India and manual material establish CM483/40322, AX88179A and 10/100/1000Mbps. The manual lists native operation on Windows 11/10/8.1/8, macOS, iPadOS, ChromeOS and Android, while Windows 7/XP/Vista and Linux require the matching driver. Nintendo Switch support depends on current system software and the console/dock USB path. No PoE, charging, video, USB-hub, VLAN, PXE, jumbo-frame or Wake-on-LAN claim is made.
02 · At a glance
Key features
03 · Connector clarity
Every interface and indicator explained
04 · Performance planning
Link-rate ceilings and real throughput
The RJ45 link-rate ceiling is 1Gbps. Real file-copy and internet results are lower because of framing, transport overhead, storage, CPU, router and service limits.
The adapter negotiates down to 100Mbps or 10Mbps when the network device, cable or intermediate path cannot establish Gigabit.
The host USB-C port must carry sufficient USB data. A charge-only USB-C connection cannot operate an Ethernet adapter.
Gigabit requires four intact cable pairs and Gigabit-capable endpoints. A two-pair or damaged cable commonly produces a 100Mbps link.
The adapter can improve connection consistency relative to congested Wi-Fi, but it cannot reduce every source of application latency or exceed the broadband plan.
05 · Complete path
What the host, cable or radio route must support
Use a USB-C port that supports host USB data or OTG Ethernet, not merely charging.
Use a Cat5e-or-better four-pair Ethernet cable and a Gigabit-capable router/switch port for a 1Gbps link.
Use an operating system that either includes AX88179A support or can install the matching driver.
For Nintendo Switch, keep system software current and connect through a compatible USB-C/USB host arrangement.
Verify the negotiated rate in network settings, then isolate internet limits with a local-network transfer if required.
06 · Network behaviour
Standards, negotiation and operating roles
RJ45 negotiation supports 10Mbps, 100Mbps and 1Gbps Ethernet link modes.
Exact controller: ASIX AX88179A.
The adapter creates one standard network interface and normally receives IP, gateway and DNS settings from the connected router.
The USB-C plug carries host data and bus power for the adapter only; it does not expose charging, video or USB pass-through.
The RJ45 socket provides data only. It does not inject or extract IEEE PoE or passive power.
Ceiling, not a promise
A port, radio or USB label is a signalling ceiling. Real performance depends on the complete path, protocol overhead, local conditions and the devices at both ends.
07 · Device fit
Compatible devices and systems
08 · Practical value
Use scenarios
09 · Usability
Setup and usability guidance
- Confirm CM483 / SKU 40322 and check the target operating system's driver requirement.
- Connect the USB-C plug directly to a host data/OTG port.
- Connect a known-good Cat5e-or-better cable between the adapter and a router, switch, modem or wall link.
- Wait for the Ethernet interface to appear; install the exact AX88179A driver when the manual requires it.
- Confirm IP address, gateway and negotiated link rate in the operating system.
- Test with a local Gigabit endpoint before attributing a slow broadband result to the adapter.
10 · Software
Driver and operating-system guidance
The exact manual lists native driver operation on Windows 11/10/8.1/8, macOS, iPadOS, ChromeOS and Android.
Windows 7, Windows XP, Windows Vista and Linux require a matching driver according to the exact manual.
Native-driver wording is not a guarantee that every future OS release or every Android device exposes USB Ethernet.
Linux support depends on kernel, distribution, CPU architecture and module-signing policy.
Nintendo Switch needs current system software and a compatible connection mode.
Avoid installing software for a similar-looking UGREEN Ethernet adapter that uses a different controller.
Driver discipline
Match the exact SKU, chipset, operating-system version and CPU architecture. A driver for a similar enclosure can be incompatible with the hardware inside.
11 · Verified scope
What this product does
- Adds one auto-negotiating 10/100/1000Mbps RJ45 interface to a compatible USB-C host.
- Uses the exact documented AX88179A controller, braided lead and aluminium body.
- Works natively on the exact manual's listed modern Windows, Apple, ChromeOS and Android environments when the device exposes USB Ethernet.
- Can be used with an updated compatible Nintendo Switch setup.
12 · Clear boundaries
What this product does not do
- It does not provide 2.5GbE, 5GbE or 10GbE; its Ethernet ceiling is 1Gbps.
- It does not charge the host, accept USB-C PD, output video or provide USB pass-through.
- It does not supply or receive PoE through RJ45.
- It cannot add USB host/OTG capability to a phone or tablet that does not expose it.
- It is not a modem, router, Wi-Fi adapter or network switch.
13 · Best practice
What to do
14 · Common mistakes
What not to do
15 · Read before use
Warnings and limitations
16 · Diagnostics
Troubleshooting by symptom
17 · Exact data
Technical specifications
| Specification | Verified exact-SKU detail |
|---|---|
| Brand / model | UGREEN CM483 / SKU 40322 |
| Product type | USB-C to Gigabit Ethernet adapter |
| Controller | ASIX AX88179A |
| Host connector | USB-C data / compatible OTG |
| Network connector | RJ45 |
| Link modes | 10 / 100 / 1000Mbps auto-negotiation |
| Housing | Aluminium |
| Host lead | Integrated braided cable |
| Indicator | Network link/activity LED |
| Native-driver systems listed | Windows 11/10/8.1/8; macOS; iPadOS; ChromeOS; Android |
| Driver-required systems listed | Windows 7/XP/Vista; Linux |
| Approximate body size | 2.4 × 0.9 × 0.5 inches |
| PoE / charging / video | Not supported |
Package contents
- UGREEN CM483 / 40322 USB-C Gigabit Ethernet adapter
- User manual
Retail bundles can vary. Ethernet cables, routers, chargers, external power supplies or host adapters are not included unless they appear in the verified list above.
18 · Native collapsible answers
Product-specific FAQ
What exact model does this page cover?
This page covers UGREEN CM483, SKU 40322, using the documented ASIX AX88179A controller.
What is the highest stated link speed?
The Ethernet link ceiling is 1Gbps with 100Mbps and 10Mbps fallbacks; actual application throughput is lower.
Does it need a driver?
Modern systems listed in the manual use a native driver; Windows 7/XP/Vista and Linux require a matching driver.
Which hosts or network devices are compatible?
The exact manual lists modern Windows, macOS, iPadOS, ChromeOS, Android and an updated compatible Nintendo Switch setup.
Will it make my internet faster?
No. It can provide a stable wired client link but cannot exceed the ISP, router, cable or remote endpoint.
Does it support or supply PoE?
No. The RJ45 socket neither provides nor receives PoE as part of this adapter's function.
What do its USB or power connections actually do?
The USB-C plug carries host USB data and adapter power only; it does not charge, output video or host other USB devices.
What cable or radio path should I use?
Use a four-pair Cat5e-or-better cable and a Gigabit-capable network port for a 1Gbps link.
Is warmth normal?
A little warmth can be normal. Keep it uncovered and disconnect it if heat, odour or resets become abnormal.
What should I check first if it does not work?
Check USB data/OTG support, driver, cable pairs, network endpoint and the negotiated link rate.
What is included in the box?
The verified package contains the CM483/40322 adapter and user manual.
