UGREEN exact SKU 70446
A dedicated USB-C path to 2.5 Gigabit Ethernet
A compact RTL8156-based network adapter for compatible USB-C hosts, with clear cabling, negotiation and operating-system boundaries.
01 · Product introduction
Overview
UGREEN 70446 USB-C to 2.5GbE Ethernet Adapter is a compact RTL8156-based network adapter for compatible USB-C hosts, with clear cabling, negotiation and operating-system boundaries.
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 official material lists 10/100/1000/2500Mbps, RTL8156, a 15cm lead and Windows/macOS/iOS compatibility, while explicitly excluding Linux, ChromeOS and Android. Exact live artwork mentions Wake-on-LAN, but this draft deliberately does not make that claim. Cat6-or-better is the exact official 2.5G recommendation. No PoE, charging, video, USB-hub or routing 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
2.5Gbps is the Ethernet link-rate ceiling, not guaranteed file-copy or internet throughput. Protocol overhead, storage speed, CPU load and the remote endpoint reduce results.
The adapter negotiates down to 1Gbps, 100Mbps or 10Mbps when any active part of the path cannot establish 2.5GbE.
A complete 2.5GbE path needs a 2.5GbE host-side USB link, compatible driver, 2.5GbE router/switch/NAS port and suitable cable.
The exact source recommends Cat6 or better for 2.5GbE. A cable marked for higher category still needs intact pairs and correct terminations.
A multi-gigabit local network can accelerate transfers to a capable NAS even when the broadband plan is slower than 2.5Gbps.
05 · Complete path
What the host, cable or radio route must support
The USB-C host port must expose USB data at sufficient speed; a charge-only USB-C port cannot operate the adapter.
The connected switch, router, modem or NAS port must explicitly support 2.5GbE to negotiate 2.5Gbps.
Use the exact supported operating system and its current network driver.
Use a short, intact Cat6-or-better cable for the clearest 2.5GbE recommendation and verify any wall jacks or couplers in the route.
Check the negotiated link in the operating system or network equipment rather than inferring it from the internet speed test.
06 · Network behaviour
Standards, negotiation and operating roles
RJ45 negotiation supports 10Mbps, 100Mbps, 1Gbps and 2.5Gbps Ethernet link modes.
Exact live material identifies the RTL8156 controller.
The adapter is a USB network interface; IP addressing normally comes from a router/DHCP server.
This model does not inject IEEE PoE or passive power and should not be used as a power source for cameras, access points or phones.
No verified VLAN, PXE, jumbo-frame or Wake-on-LAN promise is included in this customer copy.
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 SKU 70446 and check that the host operating system is in the exact supported list.
- Connect the USB-C plug directly to a host USB data port, not a charge-only socket.
- Connect a known-good Cat6-or-better cable between the adapter and the router, switch, modem or NAS.
- Wait for the OS to create the Ethernet interface and install an exact compatible driver if required.
- Confirm an IP address, gateway and negotiated link rate in network settings.
- For a 2.5GbE test, copy between fast local endpoints before using an internet speed test.
10 · Software
Driver and operating-system guidance
Exact official compatibility lists Windows, macOS and iOS.
Driver needs vary by OS release; use the exact operating system's current native or official RTL8156-compatible package rather than claiming universal driver-free operation.
Linux is explicitly excluded by the exact source despite the chipset family having broader third-party support elsewhere.
ChromeOS and Android are explicitly excluded for this exact SKU.
A future OS update can change USB-network driver behaviour; verify the current release when the adapter is intended for a locked-down or business-managed device.
No management software is required for ordinary Ethernet settings beyond the host network driver.
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 RJ45 Ethernet interface up to 2.5Gbps to a supported USB-C host.
- Falls back to 1Gbps, 100Mbps or 10Mbps when the connected path negotiates a lower mode.
- Uses the exact documented RTL8156 controller and compact aluminium housing.
- Supports compatible Windows, macOS and iOS hosts according to the exact official source.
12 · Clear boundaries
What this product does not do
- It does not add 2.5GbE capability to a Gigabit-only switch, router, NAS or cable path.
- It does not charge the host, accept USB-C PD, output video or provide USB pass-through.
- It does not provide PoE or passive power through RJ45.
- It does not act as a router, modem, Wi-Fi adapter or network switch.
- It does not have exact-source support for Linux, ChromeOS or Android.
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 / SKU | UGREEN 70446 |
| Product type | USB-C to RJ45 Ethernet adapter |
| Controller | Realtek RTL8156 in exact live material |
| Host connector | USB-C data |
| Network connector | RJ45 |
| Link modes | 10 / 100 / 1000 / 2500Mbps auto-negotiation |
| Recommended 2.5G cabling | Cat6 or better in exact official source |
| Integrated cable | Approximately 15cm |
| Housing | Aluminium |
| Approximate body size | 71 × 28 × 16.6mm |
| EAN | 6957303874460 |
| Official OS list | Windows / macOS / iOS |
| Official exclusions | Linux / ChromeOS / Android |
| PoE / charging / video | Not supported |
Package contents
- UGREEN 70446 USB-C to 2.5GbE adapter
- Product documentation
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 SKU 70446, the RTL8156-based USB-C to 2.5GbE adapter.
What is the highest stated link speed?
It negotiates up to 2.5Gbps, with fallbacks to 1Gbps, 100Mbps and 10Mbps; real application throughput is lower.
Does it need a driver?
Driver requirements vary by supported OS release. The copy does not make a blanket driver-free claim.
Which hosts or network devices are compatible?
Exact official support lists Windows, macOS and iOS; Linux, ChromeOS and Android are explicitly excluded.
Will it make my internet faster?
No. It can remove a client link bottleneck, but the router, switch, service and remote endpoint set their own limits.
Does it support or supply PoE?
No. It neither receives nor supplies PoE or passive power through RJ45.
What do its USB or power connections actually do?
The USB-C plug is for host USB data and adapter power only; it does not charge the host, output video or host USB devices.
What cable or radio path should I use?
Use Cat6 or better as the exact 2.5G recommendation and ensure every intermediate link supports 2.5GbE.
Is warmth normal?
Mild warmth can be normal. Keep the aluminium body uncovered and disconnect it if heat or smell is abnormal.
What should I check first if it does not work?
Check USB data capability, exact OS support, driver, 2.5GbE endpoints, cable pairs and the negotiated link rate.
What is included in the box?
The verified base package contains the UGREEN 70446 adapter and product documentation.
