I don’t know this smells of some pencil Pusher looking at an engineer going “can you bring the cost of that rubber o-ring down 13 cents”… “I know you were looking for a specific type of seal but I got this huge assortment pack right here from my local temu…”
Right the jumpers would be cable select, master , slave generally. You could use master and slave or cs but shouldn’t together. Not that you can’t but screwing up your jumpers was the easy way to be pulling you hair out for failure to boot to the right drive or failure to id in the right order.