Description
UGREEN
UGREEN USB3.0 to RJ5 Black Gigabit Ethernet Adapter – CR111-20256
Product description
The UGREEN USB 3.0 to Gigabit Ethernet Adapter (Model: CR111 / 20256) is a high-speed networking accessory that instantly adds a wired RJ45 network port to laptops or desktops. It provides stable, lag-free connectivity up to 1000Mbps, making it perfect for heavy-bandwidth tasks like gaming, 4K streaming, and rapid file transfers.
Product features (UGREEN CR11120256)
High-Speed Connectivity
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- Gigabit Networking: Delivers stable internet speeds up to 1000 Mbps.
- USB 3.0 Bandwidth: Maximizes a 5 Gbps pipeline to ensure zero network throttling.
- Backward Compatible: Works seamlessly with USB 2.0 and USB 1.1 ports.
- Auto-Negotiation: Automatically detects and matches 10/100/1000 Mbps network speeds.
Broad Device Support
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- Nintendo Switch Compatible: Offers lag-free online gaming when docked.
- Universal Desktop/Laptop Extension: Adds wired internet to ultra-thin laptops lacking an RJ45 port.
- Plug and Play: Functions immediately without drivers on Windows 11/10/8.1/8 and Chrome OS.
Advanced Networking Protocols
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- IPv4/IPv6 Support: Fully compatible with modern routing protocols.
- Wake-on-LAN (WOL): Enables remote computer startup via network packets.
- Full & Half Duplex: Supports cross-talk-free data flow (FDD) and two-way alternate communication (HDD).
- Network Offload Engine: Includes Checksum Offload (IPv4, IPv6, TCP, UDP) to lower CPU usage.
Physical Design
- Compact Footprint: Pocket-sized build makes it ideal for travel bags.
- LED Status Indicators: Features built-in Link (yellow) and Activity (green) lights for easy troubleshooting.
- Integrated Cable: Comes with a short, flexible 10cm USB tail to reduce strain on host ports.
Product specifications (UGREEN CR11120256)
Hardware & Performance
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- Chipset: ASIX AX88179
- Host Interface: USB 3.0 Type-A (Male)
- Network Interface: RJ45 Ethernet (Female)
- Data Transfer Rate: Up to 1000 Mbps (Gigabit)
- Duplex Modes: Full Duplex (FDX) and Half Duplex (HDX)
Network Standards & Protocols
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- IEEE Standards: IEEE 802.3, 802.3u, and 802.3ab (10Base-T, 100Base-TX, and 1000Base-T)
- IP Compatibility: IPv4 and IPv6 protocols
- Packet Handling: Jumbo Frames up to 9 KB
- Power Management: Wake-on-LAN (WOL) and Link-down Power Saving
Compatibility
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- Plug & Play OS: Windows 11 / 10 / 8.1 / 8, Chrome OS
- Driver Required OS: macOS, Linux kernel 2.6+, Windows 7 / XP / Vista
- Console Support: Nintendo Switch (Docked mode)
- Incompatible Devices: Nintendo Wii / Wii U, Windows RT, Surface RT / Surface 2
Physical Characteristics
- Enclosure Material: ABS Plastic (Black)
- Cable Length: 10 cm (Built-in)
- LED Indicators: Green (Power/Link status), Yellow (Data activity)
- Power Source: USB bus-powered (No external power required)





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