Name: Motion Computing J3400 J3500 Tablet PC Buttons Driver
Author: Motion

Question 1

Install fails or rolls back?

Accepted Answer

Run the Motion J3400/J3500 button driver installer as Administrator. If it’s an older package, use Windows Compatibility Mode for XP/Vista/7 and reboot before retrying.

Question 2

Buttons not detected?

Accepted Answer

Check Device Manager for an unknown or missing Motion HID/button device. Remove it, reboot, and reinstall the J3400/J3500-specific driver; also confirm the tablet buttons aren’t disabled in Motion Dashboard or BIOS.

Question 3

Version conflicts?

Accepted Answer

Uninstall any existing Motion button/HID driver, delete the device in Device Manager, reboot, then install the correct J3400/J3500 package. Avoid mixing J3400 and J3500 driver versions.