A dual cable machine is a piece of exercise equipment with adjustable cables which allow you to perform many different motions. Dual cable machines usually involve a weight stack at one end, through a set of pulleys which ends up with an attachment for a handle, rope, or bar.  You pull the cable which lifts the amount of weight you select on the weight stack. They will sometimes be equipped with seated rows and lat pull down set-ups on each side.

Here are some recommended alternatives