Description
The UGREEN CM648 (25051) is a high-speed USB-A to RJ45 Ethernet adapter designed to provide fast, stable wired network connectivity for computers and laptops. Equipped with a USB 3.0 interface, it supports data transfer speeds of up to 5Gbps and delivers Ethernet networking at up to 2.5Gbps. The adapter automatically supports 10M, 100M, 1000M, and 2.5G network speeds for flexible compatibility. It features full/half-duplex operation, auto cross-detection, Wake-on-LAN, IPv4/IPv6, TCP/UDP, and 16K jumbo frames for reliable network performance. Windows 7/8.x/10 requires manual driver installation, while Windows 11 and macOS offer plug-and-play operation. Its compact design and USB-powered operation make it a convenient solution for upgrading compatible devices to high-speed wired networking.
Specifications
| Specification | Details |
|---|---|
| Brand | UGREEN |
| Model | CM648 (25051) |
| Product Type | USB-A to RJ45 2.5G Ethernet Adapter |
| Input Port | 1 × USB-A Male |
| USB Standard | USB 3.0 |
| USB Speed | Up to 5Gbps |
| USB Compatibility | USB 2.0 / 1.1 backward compatible |
| Output Port | 1 × RJ45 Female |
| Ethernet Standards | IEEE 802.3bz / az / u / ab |
| Network Speeds | 10M / 100M / 1000M / 2.5G |
| Speed Selection | Auto-adaptive |
| Duplex Modes | Full Duplex / Half Duplex |
| Cross Detection | Auto cross-detection |
| Network Cable Correction | Supported |
| Wake-on-LAN | Supported |
| Network Protocols | IPv4 / IPv6 / TCP / UDP |
| Jumbo Frames | Up to 16K |
| Power Indicator | Green LED, always on |
| Data Indicator | Orange LED, flashing during transmission |
| Power Supply | USB port of computer |
| Standby Power Consumption | Approx. 86mA |
| Power Consumption with Network Cable | Approx. 129mA |
| Windows 7/8.x/10 | Manual driver installation required |
| Windows 11 | Plug & play |
| macOS | Plug & play |
| Supported Systems | Windows, macOS |
| Operating Temperature | 0°C ~ 45°C |
| Storage Temperature | -10°C ~ 60°C |
| Maximum Surface Temperature | 36.5°C at 25°C ambient temperature |
High-Speed 2.5G Ethernet
The UGREEN CM648 supports Ethernet speeds of up to 2.5Gbps, providing significantly faster wired networking than standard Gigabit Ethernet. It is suitable for fast file transfers, network storage, streaming, and other bandwidth-intensive tasks.
USB 3.0 Interface
Featuring a USB-A male connector with USB 3.0 support, the adapter offers up to 5Gbps USB transfer bandwidth. It is also backward compatible with USB 2.0 and USB 1.1 ports for broader device compatibility.
Auto-Adaptive Network Speeds
The adapter automatically detects and adapts to available network speeds, supporting 10M, 100M, 1000M, and 2.5G Ethernet. This allows it to work flexibly with different network environments and equipment.
Reliable Network Performance
With support for full/half duplex operation, auto cross-detection, network cable correction, IPv4/IPv6, and TCP/UDP protocols, the CM648 is designed to provide dependable wired network connectivity.
Wake-on-LAN & Jumbo Frames
Wake-on-LAN support allows compatible computers to be remotely awakened through the network. The adapter also supports jumbo frames up to 16K, which can help improve efficiency during large data transfers on compatible networks.
LED Status Indicators
The adapter features two LED indicators for easy monitoring. A green LED indicates power, while the orange LED flashes during data transmission, allowing users to quickly check the adapter’s operating status.
Wide System Compatibility
The UGREEN CM648 works with Windows and macOS systems. Windows 7/8.x/10 requires manual driver installation, while Windows 11 and macOS support plug-and-play operation without manual driver installation.
