EXVIST 4GDWU82CU3 Dual-Band WiFi USB Dongle (AC867) - Datasheet

4GDWU82CU3 Series

Introduction

Part Number
Connector
4GDWU812CU3
Type-C, 2x 4G/WiFi Antennas
NotesNOTE: Please note this is just one WiFi USB dongle; it might require the installation of the corresponding drivers of wifi module based on different operating system.
The 4GDWU82CU3 is a high-performance dual-band WiFi USB dongle designed for reliable and high-speed wireless connectivity. Featuring an integrated BL-M8812CU3 WiFi module, it supports the latest IEEE 802.11a/b/g/n/ac standards, delivering speeds up to 867 Mbps. With dual external antennas for enhanced signal strength and a USB Type-C interface for broad compatibility, this dongle is ideal for users requiring stable, long-range WiFi access in diverse environments.

Key Features

  1. Dual-Band Connectivity: Operates on 2.4 GHz and 5 GHz bands for flexible and interference-free networking.
  2. High-Speed Performance: Supports 2T2R MIMO technology with a maximum PHY rate of 867 Mbps.
  3. Advanced Chipset: Powered by the RTL8812CU-CG chipset for efficient and reliable wireless transmission.
  4. External Antennas: Includes 2× detachable 4G/WiFi antennas with IPEX connectors for improved signal range and stability.
  5. Wide Compatibility: Compliant with IEEE 802.11 a/b/g/n/ac standards and features a USB Type-C host interface (with included USB-to-Type-C cable).
  6. Robust Design: Compact SMD form factor (27.0×17.8×3.1 mm) with an operating temperature range of -20°C to +70°C.
  7. Easy Power Supply: Powered via USB (3.3V ±0.2V), suitable for laptops, desktops, and embedded systems.

Applications

  1. Home & Office Networking: Extend WiFi coverage or add dual-band capability to desktops, laptops, and IoT gateways.
  2. Embedded Systems & Industrial Use: Provide reliable wireless connectivity for industrial PCs, digital signage, and automation equipment.
  3. Travel & Mobility: A portable solution for stable internet access on the go, compatible with modern USB Type-C devices.
  4. Media Streaming & Gaming: Deliver low-latency, high-throughput connectivity for HD video streaming and online gaming.
  5. Prototyping & Development: Ideal for WiFi-enabled product development, testing, and integration projects.

Specification of WiFi Module

CHIPSET
 RTL8812CU-CG
WiFi Standards
 IEEE802.11a/b/g/n/ac, 2T2R MIMO, 2.4G/5GHz, 867Mbps (Max)
Host Interface
USB2.0
Antenna
Connect to the external antennas through IPEX connectors
Dimension
SMD 12Pins, 27.0*17.8*3.1mm (L*W*H，Tolerance:±0.15mm)
Power Supply
VDD 3.3V±0.2V @850mA Max
Operation Temperature
-20℃ to +70℃
Operation Humidity
10% to 95% RH (Non-Condensing)

Hardware Interfaces

Type-C Interfaces


Notes
NOTE: 1x Type-C to USB-A 2.0 cable (Max. 52cm with Type-C & USB-A connector) will be attached in the gift box.

SIM Card & Antennas


Notes
NOTE
  1. The standard SIM card slot is reserved for use with an optional 4G module.

Dimension




Structure

  1. 4G DONGLE Graphic
Info
🧙TIPS: Feel free to click and download the necessary structure if needed.

Installation Guide

Loosen the screws


Notes
NOTE: just loosen the four screws on the right hand side.

Install the module and antenna

  1. Insert the Mini PCIe to USB WiFi Module into the designated slot on industrial adapter P2U52V08TC;
  2. Connect ANT1 to the IPEX connector on the WiFi USB module;
  3. Connect ANT2 to the IPEX connector.


Notes
NOTE:
Understanding the IPEX Connectors:
  1. Main IPEX Connector (ANT1): Generally provides primary signal reception and transmission.
  2. Auxiliary IPEX Connector (ANT2): Often used for diversity reception or as a secondary antenna to improve signal quality.
Why Cross Antennas?
  1. Reducing Interference: By crossing the two antennas, you help minimize interference caused by multipath propagation, where the same signal arrives at the receiver from different paths, potentially canceling each other out.
  2. Improving Signal Quality: This configuration leverages diversity combining techniques, which can effectively enhance the overall signal quality and reliability of the wireless connection.

Insert the SIM card (FOR 4G LTE DONGLE ONLY)

Press the self-ejecting button to release the SIM card holder, and then insert the SIM card in the correct orientation:

Connect the external antenna



Notes
NOTE:
  1. If possible, position the antennas away from each other to minimize interference.
  2. If your device's design permits, mount the antennas at approximately 90 degrees to each other to enhance reception capabilities.

Install the module driver if required

Notes
NOTE: Download and install the appropriate drivers for the WiFi USB Module on your PC. 

Connect to the PC

Connect the dongle to your PC using the included Type-C to USB 2.0 cable and check if you can connect to the WiFi Hotspot:
Notes
NOTE: If you’re unable to connect to your local WiFi Hotspot, please double-check the following issues:
  1. Have you installed the correct drivers for the WiFi module if you're using the old operating system?
  2. Have you already entered the correct credential for WiFi Hotspot?

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