> For the complete documentation index, see [llms.txt](https://docs.firescope.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.firescope.io/en/faq/device-manager.md).

# Check Ports in Device Manager

If the roasting machine is not recognized by Firescope even after installing the correct serial port driver, follow these steps:

* Check driver installation: Ensure the serial port driver is properly installed. (for more guides, click [HERE](https://docs.firescope.io/v/en/faq/installing-serial-port-usb-driver))
* Device Manager check: 
  * Open Device Manager by right-clicking the Windows Start button and selecting "Device Manager".  
  * Click on the View (V) menu at the top and then check Show hidden devices (W). If it is already checked, leave it as it is. 
  * Scroll through the device list and expand Ports (COM & LPT) at the bottom.
  * Check the listed ports to determine if they are functioning correctly. Take a screenshot and share it with our support team [here](https://www.firescope.io/proxy/english/chat). 

## Troubleshooting Cases

#### USB Serial Port (COM + number) appears, but doesn't show up in Firescope:

* Restart Firescope and check again. If the port is still missing, contact us for further assistance.

#### Port not appearing in Device Manager:

* If the USB driver is installed but the port isn't recognized, there may be a USB connection issue with the roasting machine or computer. 
* Test on another computer. If the port appears on the second computer, the issue is with the original computer's USB port.
* If the port is still not visible, contact the roaster's manufacturer for service. 

#### Port appears, but is not listed as a USB Serial Port:

* If the port shows up as "Standard Bluetooth to Serial Link (COM)," it is unrelated to the roasting machine. This situation should be treated like the [case above](#port-not-appearing-in-device-manager).