Overview Product Description MT5600ZDX-R - 5600 kbps V.90 w/Fax Dial-up External (Refurbished) 90 Day Warranty Product Videos Custom Field Product Reviews Write a Review Write a Review × Multi-Tech MT5600ZDX-R Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *