First, the basics, after turning on your tv and selecting bluetooth 1. Charge your keyboard 2.. turn it on, then tap the connect 3. Your Samsung may have timed out whilst scanning,, so touch tv scan option again If all works you should be able to connect by selecting your keyboard on the tv and choosing the pair option Now let's look at professional advice. https://www.samsung.com/us/support/answer/ANS00085243/ For more options Google "connect UA50KU6000W X to bluetooth keyboard" including quote marks Note the advice above is for a variant of your tv model as the precise link didn't come up.
Woops, I missed the key words, no bluetooth capability. Sorry. One thing to try as a long shot, is to initially beg, borrow or buy a bluetooth dongle for plug in if you have a spare usb slot. It is a long shot as a computer has software to cope with this but tv possibly not. Since related models do have bluetooth there is a chance the software is there. Such dongles can be really cheap, like less than $10 plus postage, so shop around. There are also devices that convert from one type of input to another, so check bluetooth to wireless connections, assuming your tv has wi-fi.
Depending upon your attachment to your keyboard, you could look out for a wireless keyboard. Again, can be cheap. I bought a mouse with built-in wirelessi and bluetooth for around $8 plus postage. Even in Officeworks wireless keyboards range from $19 to several hundred dollars.
