STU Installation
STU Driver
Download and run Wacom-STU-Driver-5.4.5.exe
Requirements
The driver is required to use colour STU signature pads with the STU SDK and Wacom Signature SDK for Windows in order to optimise image upload speed. The driver is also required when using any STU signature pad on Windows 8 or 8.1 to disable power save disconnect.
Please note: image upload speed for the JavaScript Signature SDK cannot be improved by installation of the STU driver, but it may still be advisable to install the driver on Windows 8 or 8.1 in order to disable the power save disconnect feature.
Summary
The driver is required to improve image upload speed of the colour display STU signature pads (this does not apply to the JavaScript Signature SDK) and also when using any of the STU signature pads on Windows 8.1.
It allows the device to use USB Bulk Transfer to handle the transfer of increased image data size (compared with the mono STU tablets).
On Windows 8 and 8.1 it also disables the Enhanced Power Management setting.
The driver installation merely configures the USB interface for the STU tablet and can be used in all configurations without any detrimental effect.
The need for installation is dependent on the STU model and Windows version as shown in the table below.
N.B. Please note that the information in this article about Windows 7, 8 and 8.1 is provided with the caveat that we no longer officially support versions earlier than Windows 10. If any problems are encountered on earlier versions our recommendation will be to upgrade to Windows 10 or later.
| STU Model | Windows 7 (*) | Windows 8 (*) | Windows 10 | Windows 11 |
|---|---|---|---|---|
| STU-300, STU-500 | Not required | Required to prevent power save disconnect | Not required | Not required |
| STU-520 | Required for faster image upload | Required for faster image upload and to prevent power save disconnect | Required for faster image upload | Required for faster image upload |
| STU-430 | Not required | Not required | Not required | Not required |
| STU-530 | Required for faster image upload | Not required | Recommended for optimum image upload speed | Recommended for optimum image upload speed |
| STU-540 | Required for faster image upload | Not required | Recommended for optimum image upload speed | Recommended for optimum image upload speed |
| STU-541 | Required for faster image upload | Not required | Recommended for optimum image upload speed | Recommended for optimum image upload speed |
* As mentioned above we no longer officially support Windows 7 or 8.
If in any doubt we recommend installing the driver as it has no impact on system performance.
Please note that the JavaScript Signature SDK is excluded from the above statements about upload speed because it uses HID protocol rather than USB protocol.
Instructions
Using Wacom-STU-Driver.exe
- Check that the STU tablet has been disconnected before running the installer.
- Download the .exe and run it directly from Windows Explorer or in a DOS command line.
- The .exe autodetects 32 or 64 bit Windows and installs accordingly.
To view the available options use the command:
Wacom-STU-Driver.exe /?
For example, for minimal prompts:
Wacom-STU-Driver.exe /quiet
To disable the check for STU connection:
Wacom-STU-Driver.exe NO_STU_CHECK=1
To uninstall the driver:
Wacom-STU-Driver.exe NO_STU_CHECK=1 /uninstall /q
Note for Windows 7
To use the /q option the installer must be run in elevated mode to give Administrator rights, e.g.:
Start -> All Programs -> Accessories -> Right-click <Command Prompt>: 'Run as Administrator'