Portsmith USB Host to Ethernet devices, like the PS6U1UHE adapter, require software be installed on the Mobile Computer before they can operate correctly. The PSDUHE software for your specific device is specified on the product pages for products that require the software.
Install PSDUHE CAB File
Download the Cab file as specified on the product page. Using ActiveSync or an SD Card, copy the appropriate CAB file to your device. Double tap the CAB file, and let it install. After installation is complete, the software will ask you to reboot. NOTE: You must reboot before the software will work properly.