Non-common hardware can be a common pain in the ass. However, to get started, try this command (in terminal):
See if your EnGenius shows up there.
If you want to narrow down the long list without searching so hard, try this:
lsusb | grep -i "engenius"
With that latter command, replace "engenius" with anything that might refer to your video card - for instance replace engenius with EU9603H or adapter.
Let us know what you come up with.
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