Indeed, referring to the red WICED Sense EVB. When I connect it via the USB my PC doesn't recognize it physically. No LED lights on. When I use the coin battery it operates - connects to the iPhone etc.
Install the Silicon Labs USB to serial drivers at the link above with the device unplugged. Once installed, plug the device in and check Windows Device Manager to confirm that it enumerates correctly. Do not install the drivers while it's plugged in, then try to confirm operation without a reboot. You wont see it in Device Manager. Sometimes, it takes a few restarts/plug ins to get working.
OK, I see it now in the Windows Device Manager. This means I can communicate to it from the SDK?