Was installed last week, but installer left user manual for the standard digital box, not the HD box. Have been looking on line, even downloaded the proper manual from Motorola, but cannot find the info I am looking for. Maybe someone experienced with this box can help. First question---in the upper right corner of the front display is an orange light designated as "A/B". Downloaded manual identifies this as some kind of switch. What is this for? Second question--Is there any way to configure box so that bringing up the guide will display only the favorites in grid form? This does happen sometimes, but usually it reverts back to the beginning channel #2. I know that I can forward to my favorites(HD section) by entering the correct number, but just cannot understand why it will automatically do it part of the time only. Any help on these 2 items will be most appreciated.