If there's three little wires(Red/Black/White)coming out of a little blue box on the feed horn, it's servo operated for polarity. Not many FTA receivers can operate them. Old Pansat models and their new HDX9500 are the only models I know of that will run them. Those or an old analog receiver will operate the servo
There was, a while back, someone selling a box on ebay that would monitor the LNBF voltage from the receiver and operate the servo automatically. (Simulating an LNBF)
ALL FTA receivers will operate a new LNBF. No servo. Polarity selection via voltage.
Dual band LNBF's BSC621 or the 741 CKU LNBF. C band only: BSC241(I have this on my BUD), ESX241, SatelliteAV's C1 or the dual output C2. Hope I didn't forget a model/line. Will have to find out from others how that dish performs on Ku. (personally, I'm of the opinion the dual band LNBF are compromising performance to get both bands. But many find them satisfactory with diligent tweaking.)
Then later, if/when you get seriouslly addicted, for utmost performance put an orthomode feed on it.(Too pricey for me)