What is BRCM-LVG under shared? Is my computer being hacked?

Recently, a PC device called brcm-lvg has been showing up on my network in the finder sidebar under sharing.

It started showing up around the time that I upgraded to Yosemite, V 10.10.4. This could just be coincidence.

I have no idea what this device is and a Google search returns unhelpful results. After upgrading to Yosemite, I noticed my Firewall had been turn off. When it's turned off, it says I'm connected to the "brcm-lvg" device as a guess. This device contains one empty folder called "Shared." How could I possibly be connected to this device if I never connected myself to it?

When I turn the firewall on, the mysterious device says the Connection Failed. However, I can't remove the device from the sidebar at all. Even when I press the eject button, it stays there.

What is this "brcm-lvg" device? Is my computer being hacked?

Thank you for your help