USB to RJ45 Ethernet Interface Module CH397A Type-C to RJ45 Ethernet Adapter Board Compatible USB2.1 IEEE802.3 10Mbps 100Mbps
SPECIFICATIONS
Brand Name: EC Buying
High-concerned chemical: none
Model Number: USB-to-Ethernet adapter
Origin: Mainland China
is_customized: Yes
Features:
1. High integration single-chip solution with built-in RISC-V processor and USB/Ethernet controller.
2. Supports multiple protocols, compatible with USB 2.1 and IEEE 802.3 standards, and adaptable to various types of devices.
3. Automatically negotiate 10M/100M speeds, support IPv4/IPv6 packet verification and traffic control.
4. Low power design, supporting sleep mode and remote wake-up function, with a transmission distance of up to 120 meters.
5. Miniaturized PCB design, streamlined peripheral circuits, and strong ESD protection performance.
Functional performance introduction:
Single chip USB2.0/2.1 to 10/100M Fast Ethernet, integrated USB PHY and Ethernet MAC and Ethernet PHY support CDC-ECM protocol, CDC-NCM protocol and RNDIS protocol, no driver installation supports 10Mbps and 100Mbps rates, compatible with IEEE802.3 10BASE-T/100BASE-TX and supports 10M/100M auto negotiation.
Built in TX/RX packet buffer
Support IPv4/IPv6 packet verification, support IPv4 TCP/UD? HEA! 1.61F/uP packet verification generation and inspection support IEEE802.3x flow control and half duplex collision pressure fallback flow control
Supports IEEE 802.3QV LAN tagging
Supports sleep mode and low-power sleep mode, supports network low-power configuration, supports dynamic power management, and supports remote wake-up through events such as magic packets and network wake-up packets
Supports UTP CAT5E and CAT6 twisted pair cables, with a transmission distance of 120 meters
Support AutO MDIX exchange TX/RX, automatically identify positive and negative signal lines
Optional external SPI Flash that can update user configurations
Support LED flashing frequency and duty cycle configuration
Built in LD0, single power supply
Built in 50 Ω impedance matching resistor, built-in capacitor required for crystal oscillator, simplified peripheral circuit
The processor IP, controller, and transceiver IP are all self-developed and tightly integrated, with high efficiency and low cost
6KV enhances ESD performance, ClaSS3A
Network connection communication test:
1. Install the driver;
2. Connect the module to the computer USB; Insert one end of the network cable into this module and the other end into the router;
3. Choose the internet connection for this module. If it can connect to the internet normally, it is considered normal; otherwise, it is abnormal.




- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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