Affected Products:![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Single-Function: CS720, CS725, CS727, CS728 and C4150
Multifunction: CX725, CX727, XC4140, XC4143, XC4150 and XC4153
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Issue Description:
A USB Device (e.g., thumb drive) that is plugged into the printer is not responding. You should see the following error on the screen.
Note:
This error appears the moment you plug in the thumb drive.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Solution:
Perform a Power-On-Reset (POR) or restart the printer to rectify the issue. This is to restore the USB host in the printer.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Switch off the printer.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Wait for a few seconds.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Switch on the printer.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Plug the thumb drive back in.
Note:
The issue is seen only when using some varieties of 3.0 USB thumb drives.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Still Need Help?
Have the following available when calling Lexmark Technical Support;
Printer model(s)
Printer serial number
LEGACY ID: SO7788