Loading... Please wait...Needed to make your legacy system work with Dishpro LNBs & switches.DishPro adapters allow you to use a Legacy receiver with DishPro switches and LNBF's. The DISHPro Adapter is required for all DISH Network Receivers; 1000, 2000, 2700, 2800, 3000, 3700, 3800, 3900, 4000, 4700, 4900, 5000, 6000, 7100, 7200 and DVHS when used in conjunction with DISHPro LNBFs.Models 301, 501, 508 and 721 DO NOT require the DISHPro Adapter.