It'll be compatible with most USB, HID-compliant keyboards from off the shelf of your local electronics store. Unfortunately, I can't get any more specific than that.
Just bought a new Samsung UNES6100. Is there a wireless keyboard that will work with the browser in this TV. I checked the Samsung website and they list several 46 inch model that are compatible but not the UNES6100. I would like to hear from someone who has my model. Thanks , Jazzman