Actually, it's just Windows key + B
EDIT: nvm, it's Win+Alt+B... I'd been using the shortcut so long my muscle memory was pressing Alt for me. Sorry for the confusion.
I'd recommend going with a Bluetooth setup vs pulling power from the Deck. You'll drain the battery fast and lose your only USB port.
Look for something with both a DAC and amp, Bluetooth, both 3.5 and 4.4mm jacks, and a simplistic interface. Avoid anything with Android as the interface, or...
Well, knowing how bad some of these initial firmware releases have been, I'd be a bit nervous about buying one that can't be updated. Actually, more than a bit.
I really wish they were 3840x1600, like my good ol 38GN950. Or 5120x2160... even better. I'd upgrade to the 39" if it was. Samsung or LG tech, don't care which. I wasn't a big fan of the overblown 800R curve on the previous 45" either. It's a bit ridiculous. Sad to see they kept it the...