1. Introduction
The Quectel EC200U series is a high-performance LTE Cat 1 wireless communication module designed for Machine-to-Machine (M2M) and Internet of Things (IoT) applications. It supports a maximum downlink rate of 10 Mbps and a maximum uplink rate of 5 Mbps, offering ultra-high cost-effectiveness.
The EC200U series is compatible with various LTE Standard modules, including EC20-CE, EC20-CN, EC200S series, EC21 series, EG21-G, EC25 series, and EG25-G, in terms of packaging, allowing for flexible module switching. This module supports the standard Mini PCIe form factor, catering to diverse industrial application needs.
Available in models such as EC200U-CN, EC200U-EU, and EC200U-AU, the series provides frequency band coverage for different countries and regions. The EC200U series utilizes laser engraving technology, enhancing its appearance, metal texture, heat dissipation, resistance to information erasure, and adaptability to automation processes.
Equipped with extensive network protocols and multiple industry-standard interfaces, the EC200U series supports various drivers and software functions (compatible with USB drivers for Windows 7/8/8.1/10/11, Linux, and Android operating systems). This broadens its application scope in M2M fields such as POS terminals, POC devices, ETC systems, shared devices, data cards, energy control, security systems, and industrial-grade PDAs.
Key features include multi-network standard coverage, rich functional interfaces, support for analog audio, optional built-in GNSS, optional Bluetooth and Wi-Fi Scan functions, and support for DFOTA (Delta Firmware Over-The-Air) remote upgrades.
2. Package Contents
The EC200U-EU Mini PCIe Module Kit typically includes the following components:
- Quectel EC200U-EU 4G LTE Cat1 Mini PCIe Module
- Mini PCIe to USB Adapter Board
- 4G LTE Antenna
- GNSS Antenna
- IPEX to SMA Pigtail Cable (for 4G LTE Antenna)
- IPEX to SMA Pigtail Cable (for GNSS Antenna)




3. Specifications
The following specifications are for the EC200U-EU module. Note that some detailed specifications are derived from the compatible EC200T-EU series due to shared architecture and compatibility.
| Feature | Specification (EC200U-EU / EC200T-EU) |
|---|---|
| Model Number | EC200U-EU MINI PCIE |
| Origin | Mainland China |
| LTE Category | Cat 1 |
| Dimensions (L×W×H) | 32.0 × 29.0 × 2.4 mm |
| Operating Temperature | -35 °C to +75 °C |
| Storage Temperature | -40 °C to +85 °C |
| LTE-FDD Bands | B1/B3/B5/B8/B20/B28 |
| LTE-TDD Bands | B38/B40/B41 |
| GSM/GPRS/EDGE Bands | B3/B8 |
| Max Downlink Rate | 10 Mbps |
| Max Uplink Rate | 5 Mbps |
| Supply Voltage | 3.4V - 4.5V (Typical 3.8V) |
| Interfaces | USIM x1, UART x2, USB 2.0 x1, PCM x1, NET_STATUS x1, NET_MODE x1, ADC x1, GPIO x1, PWRKEY x1, RESET x1 |
| GNSS | GPS/GLONASS/BeiDou/Galileo/QZSS (Optional) |
| Supported OS Drivers | Windows 7/8/8.1/10/11, Linux, Android |

4. Setup and Installation
Follow these steps to install and set up your Quectel EC200U-EU Mini PCIe Module:
- Insert SIM Card: Locate the SIM card slot on the Mini PCIe to USB adapter board (refer to Figure 4). Carefully insert your activated Nano-SIM card into the slot until it clicks into place. Ensure the correct orientation.
- Install EC200U-EU Module: Gently insert the EC200U-EU Mini PCIe module into the Mini PCIe slot on the adapter board (refer to Figure 3). Secure it with the provided screws if applicable.
- Connect Antennas: Attach the IPEX to SMA pigtail cables to the corresponding antenna connectors on the EC200U-EU module. Typically, there are connectors for MAIN (4G LTE) and GNSS. Then, connect the 4G LTE antenna and the GNSS antenna to the SMA connectors on the pigtail cables. Ensure connections are finger-tight.

Figure 6: EC200U-EU module with pigtail cables connected. - Connect to Host Device: Plug the USB connector of the adapter board into an available USB port on your computer or host device.
- Driver Installation: Upon connecting, your operating system (Windows, Linux, Android) may automatically detect and install necessary drivers. If not, you may need to manually install drivers provided by Quectel or your module vendor. Refer to the Quectel website for the latest driver packages.
- Verify Installation: After driver installation, the module should be recognized by your system as a modem or network adapter. Check your device manager (Windows) or network settings (Linux/Android) to confirm successful detection.
5. Operating Instructions
Once the EC200U-EU module is successfully installed and recognized by your host device, you can proceed with operation:
- Network Connection: Use your operating system's network management tools to connect to the cellular network. This typically involves selecting the cellular modem and initiating a connection. Ensure your SIM card has an active data plan.
- Data Transfer: Once connected, the module will provide internet access. You can use any application that requires network connectivity.
- GNSS Functionality (if applicable): If your module includes GNSS and the GNSS antenna is connected, you can access location data through compatible software or APIs on your host device.
- AT Commands: For advanced configuration and control, the module supports AT commands. These commands can be sent via a serial terminal application connected to the module's UART interface. Refer to the Quectel AT Command Manual for a comprehensive list of commands.
6. Maintenance
To ensure optimal performance and longevity of your EC200U-EU module, consider the following maintenance tips:
- Keep Clean: Regularly clean the module and adapter board to prevent dust accumulation, which can affect performance and heat dissipation. Use a soft, dry cloth.
- Environmental Conditions: Operate the module within its specified temperature range (-35 °C to +75 °C) and avoid excessive humidity.
- Firmware Updates: Periodically check the Quectel website for firmware updates. Firmware updates can improve performance, add features, and fix bugs. The module supports DFOTA (Delta Firmware Over-The-Air) for remote upgrades.
- Secure Connections: Ensure all antenna and USB connections remain secure to prevent intermittent connectivity issues.
7. Troubleshooting
If you encounter issues with your EC200U-EU module, try the following troubleshooting steps:
- Module Not Detected:
- Ensure the module is correctly seated in the Mini PCIe slot on the adapter board.
- Verify the USB adapter is securely plugged into the host device.
- Check if the necessary drivers are installed correctly. Reinstall drivers if unsure.
- Try a different USB port or host device to rule out port or device issues.
- No Network Connection:
- Confirm the SIM card is properly inserted and activated with a valid data plan.
- Ensure the 4G LTE antenna is securely connected and positioned for optimal signal reception.
- Check network settings on your host device to ensure the cellular modem is enabled and attempting to connect.
- Verify that your location has cellular network coverage.
- Slow Data Speeds:
- Check the signal strength indicator (if available) on your host device. Low signal strength can lead to slow speeds.
- Ensure the 4G LTE antenna is not obstructed and is positioned correctly.
- Network congestion in your area can also affect speeds.
- GNSS Not Functioning (if applicable):
- Ensure the GNSS antenna is securely connected and has a clear view of the sky.
- Verify that your host device's software is configured to use the module's GNSS capabilities.
8. User Tips
Currently, there are no specific user tips available from customer reviews or Q&A. For best performance, ensure all antennas are securely connected and positioned for optimal signal reception. Keep your module's firmware updated for the latest features and stability improvements.
9. Warranty and Support
For warranty information, please refer to the terms and conditions provided by your retailer or contact Quectel directly. Keep your proof of purchase for any warranty claims.
For technical support, driver downloads, and detailed documentation (such as AT command manuals), please visit the official Quectel website or contact their customer support. Regular firmware updates are available via DFOTA to ensure your module operates with the latest enhancements and bug fixes.





