Hello jeremym,
Sorry for not answering before, we have tested connecting a USB keyboard directly and it works fine, so apparently it is because the converter doesn't work very well, unfortunately there is only one local vendor for this type of device.
Additionally I would like to request if it is possible to integrate the touch-base (www.touch-base.com) touchscreen drivers similar to I understand ELO touch drivers are installed directly on the CP-DIS-M22 display, this is because we have installed touchbase drivers on the remote computer and it work great, but when I restart the CP-DIS-M22 device I have to "re-enable" the touchscreen driver since the disconnection is made, this happend ocasionally also when the CP-DIS-M22 lost connection to the remote computer, I have to manual enable the touchscreen again, I understand because the remote computer lost the serial COM port connection to the RealPort software.
Thank you.