I would not buy Zoom again ! we purchase this unit - start out ok , then six\/seven month later zoom push out a update through we internet provider , put the unit into vapor lock ! they customer service be really bad here - take 24 to 48 hour -lrb- m-f only -rrb- to get they to send you the e-form to fill out in order to get a rma # -lrb- so I can pay to ship it back to repair they screw up -rrb- , 2-4 day shipping , 5-10 day for repair , 2-4 day shipping -lrb- if they decide I do not do something to the unit -rrb- so three week later I can get internet back !!