Afternoon all hope your well and Merry christmas and all that

The help i need is quite simple

I have 2 20" monitors for my PC that i want to use at the same time (extended desktop etc)

Now the issue is that my PC only has a single output for the monitor . i dont want to change the PC or video card etc

I need a switch box or something , Now i want to have both screens on at the same time how do i do it and what do i need to buy and from where

Many thanks in advance for your help

nige