# Serial.list() not showing USB ports (available serial ports)

**URL:** <https://discourse.processing.org/t/serial-list-not-showing-usb-ports-available-serial-ports/46429>\
**Category:** Electronics (Arduino, etc.)\
**Created:** [May 23, 2025, 2:43am UTC](https://discourse.processing.org/t/serial-list-not-showing-usb-ports-available-serial-ports/46429 "2025-05-23T02:43:57Z")\
**Posts on this page:** 1\
**Showing post:** 7

<div class="post-metadata">

**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [May 27, 2025, 12:32am UTC](https://discourse.processing.org/t/serial-list-not-showing-usb-ports-available-serial-ports/46429/7 "2025-05-27T00:32:48Z")

</div>

Hello folks,

Some additional ways to check for COM ports on Windows systems.  
If the COM port exists then Processing (Java) should be able to see it.

@newuser ,  
Looking forward to how you resolved this.

_ **Windows** _

PowerShell:

> Get-WmiObject Win32\_SerialPort | Select-Object Name,Description

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/8/c/8c9e460f8eb3073058ed86a71654e2f01919666a.png)

Command Prompt:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/3/d/3d9298c8568e60502ee692944de69c40a7f73886.png)

Device Manager:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/c/5/c55edc7d6be4b686139b5789df91b9f855d93d9e.png)

Windows Settings:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/3X/8/2/82c2c6a85f28422eb829836cd19007b9645cd024.png)

I miss any for Windows?

_ **Processing** _

List the COM ports using the _jSerialComm library_ :  
_[More details about COM ports - #3 by glv](https://discourse.processing.org/t/more-details-about-com-ports/43714/3)_

List the COM ports using the Processing Serial Library:  
_[list() / Libraries / Processing.org](https://processing.org/reference/libraries/serial/Serial_list_.html)_

`:)`

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_[View the full topic](https://discourse.processing.org/t/serial-list-not-showing-usb-ports-available-serial-ports/46429)._