1. Introduction
The Quectel RM520N-GL is a high-performance 5G NR module designed for global deployment, supporting both sub-6GHz and mmWave frequency bands. This module comes in an M.2 form factor, making it suitable for integration into various devices such as industrial PDAs, rugged tablet PCs, and digital signage. This manual provides essential information for the proper installation, operation, and maintenance of your RM520N-GL module.
Video: Overview of Quectel modules in packaging.
2. Setup and Installation
2.1. Package Contents
The Quectel RM520N-GL module is available in several configurations:
- RM520N-GL module only: Includes the core 5G NR module.
- RM520N-GL module with accessory set: Includes the module, an adapter board, 5G antennas, and pigtail cables.
- RM520N-GL module with adapter: Includes the module and an adapter board.
- Only 5G accessory set: Includes the adapter board, 5G antennas, and pigtail cables (for users who already have the module).

Image: Quectel RM520N-GL module and optional accessories.
2.2. Module Installation
Follow these steps to install the 5G module and prepare it for use:
- Install 5G Module: Insert the RM520N-GL module into the designated M.2 slot on the 5G board or adapter.
- Install SIM Card: Insert a Nano SIM card into the SIM card slot on the adapter board.
- Connect to PC: Connect the 5G board/adapter to your computer using a USB Type-C cable.

Image: Step-by-step installation method.

Image: RM520N-GL module installed on an M.2 USB adapter board.
2.3. Antenna Connection
Proper antenna connection is crucial for optimal performance. The module supports multiple antennas for 4G, 5G, and GNSS.
- Pigtail Cables: Use MHF4 to SMA female pigtail cables to connect the module's MHF4 connectors to external SMA antennas. These cables typically have a length of 15cm, are made of RG1.13 material, and have an impedance of 50 ohms.
- 5G Antennas: The 5G antennas provided are typically SMA Male interface, supporting a frequency range of 600-6000MHz, with a 90-degree bend, IPEX 4 connector, and RoHS compliance. They usually offer a gain of 5dBi.

Image: MHF4 to SMA female pigtail cable.

Image: 5G antenna with key specifications.

Image: 5G antennas connected to the module.
2.4. SIM Card Installation
Ensure the Nano SIM card is correctly oriented and fully inserted into the SIM card slot on the adapter board. The module requires a functional SIM card for cellular network access.

Image: M.2 USB adapter board with SIM slot.
3. Operation
3.1. First Use and Driver Installation
Once the module is physically installed and connected to your PC via USB Type-C, you will need to install the appropriate driver software. The seller typically provides these drivers. The module has been tested to work with operating systems such as Windows 11 and Proxmox.
3.2. Network Connectivity
The RM520N-GL supports 5G NR (New Radio) in both Non-Standalone (NSA) and Standalone (SA) operations, compliant with 3GPP Release 15. It covers a wide range of Sub-6GHz and mmWave bands, enabling high-speed data transmission and MIMO capabilities.

Image: 5G NR bands and MIMO capabilities.
4. Specifications
4.1. Quectel RM520N-GL Module Specifications
| Feature | Specification (RM520N-GL) |
|---|---|
| Form Factor | M.2 |
| Dimensions (mm) | 52.0 × 30.0 × 2.3 |
| 5G Capabilities | Sub-6 GHz + mmWave |
| Frequency Bands | Extensive global band support (n1/n2/n3/n5/n7/n8/n20/n28/n41/n66/n71/n77/n78/n79 for Sub-6GHz; n257/n258/n260/n261 for mmWave) |
| Region | Global |
| Weight (approx.) | 6g |
| Operating Temperature | -30°C ~ +70°C |
| Extended Temperature | -40°C ~ +85°C |
| Control via | AT Commands, Quectel Enhanced AT Commands |
| 5G SA Sub-6 Data Rate | Max 2.4Gbps (DL), Max 900Mbps (UL) |
| 5G NSA Sub-6 Data Rate | Max 3.3Gbps (DL), Max 900Mbps (UL) |
| LTE Data Rate | Max 1.6Gbps (DL), Max 200Mbps (UL) |
| Interfaces | USB 3.0/2.0, PCIe Gen 3, SIM (1.8V/3.0V), UIM (1.8V/3.0V), GPIO |
| Antenna Ports | Sub-6GHz x4, mmWave x2 |
| MIMO | Sub-6 DL 4x4, UL 2x2; mmWave DL 2x2 |
| GNSS | GPS/GLONASS/BeiDou/Galileo |
| OS Drivers | Windows 7/8/8.1/10, Linux 2.6/3.x/4.x/5.x, Android 4.x/5.x/6.x/7.x/8.x/9.x/10 |
Note: Data transmission rates are theoretical and depend on network conditions.

Image: Quectel 5G NR Module Family Specifications.
4.2. General Module and Antenna Specifications
The module features dedicated antenna ports for 4G, 5G, and GNSS connectivity. The overall dimensions of the module are approximately 97mm x 39mm x 4.5mm. It operates within a temperature range of -20°C to +60°C and can be stored from -40°C to +80°C.

Image: Antenna connections and additional module specifications.
5. Maintenance
To ensure the longevity and optimal performance of your Quectel RM520N-GL module, follow these general maintenance guidelines:
- Keep Dry: Avoid exposing the module to moisture or humidity.
- Cleanliness: Keep the module and its connectors free from dust and debris. Use a soft, dry cloth for cleaning.
- Temperature: Operate and store the module within the specified temperature ranges to prevent damage.
- Handle with Care: Electronic components are sensitive. Avoid dropping or subjecting the module to physical shock.
6. Troubleshooting
If you encounter issues with your RM520N-GL module, consider the following troubleshooting steps:
- Module Not Recognized:
- Ensure the module is correctly seated in the M.2 slot.
- Verify the USB Type-C connection to your PC is secure.
- Check if the necessary drivers are installed for your operating system.
- No Network Connectivity:
- Confirm that the SIM card is properly inserted and active.
- Ensure all antennas are securely connected to their respective ports.
- Check your operating system's network settings and ensure the module is enabled.
- Verify that the module's firmware is up to date.
- Slow Data Speeds:
- Ensure antennas are positioned for optimal signal reception.
- Check for network congestion or coverage issues in your area.
- Verify that the correct 5G bands are being utilized by the module.
If problems persist after attempting these steps, please contact technical support.
7. User Tips
- Driver Software: Always ensure the correct driver software, typically provided by the seller, is installed for optimal performance and recognition by your operating system.
- Compatibility Check: Before purchasing, verify with the seller that the module meets your specific usage requirements and is compatible with your intended hardware and software environment.
- Operating Systems: The module has been successfully tested with Windows 11 and Proxmox, indicating broad compatibility with various computing platforms.
- Genuine Product: Ensure you receive a genuine product for reliable performance and support.
8. Technical Support
For any technical assistance, warranty claims, or further inquiries regarding your Quectel RM520N-GL module, please contact the seller or the official Quectel support channels. Provide your product model and any relevant details about the issue to facilitate a quicker resolution.