I have two monitors at my desk, will I be able to keep both?

Overview:

One of the desktop monitors will be replaced with a monitor that has a built-in port replicator to make connecting the laptop to the monitors, keyboard, mouse, network, etc. able to be done with a single connection. If a person only has one monitor, this will be their only external monitor. If they have 2 or 3, they would still have 2 or 3, but one will be the new monitor.