Hi Al Walsh 4,
Thank you for reaching Microsoft Community. We're sorry to know that your Surface Pro X keyboard no longer charges the pen.
A firmware update is required for your Surface Pro X Signature keyboard when charging your Slim pen.
Here's how to do the firmware update:
- Attach the keyboard to your Surface.
- Place your pen in the charging area.
- Select Start> Settings> Windows Updates> Check for updates, then install any available updates.
- Keep your accessory connected until the update finishes. You might need to restart your PC.
The details can be found at How to charge your Surface Slim Pen - Microsoft Support.
Kind regards,
Lavenia