I have two dishes. I did not set them up, but I believe there is a 2x1 switch the feeds to my STB in bedroom.

I plan getting a second box for downstairs, do I need a second 2x1 switch, or a 2x2 switch (2 input 2 output)?

Ive already got a wire running to downstairs, but I believe it is only connected to a single dish.

Here are images to better show my dish setup.
IMG_2631.jpg

IMG_2632.jpg