Overview Product Description GDC Desktop 500A -048A061-001 - 56K DSU/CSU V.35/RS232 External (Refurbished) 90 Day Warranty Product Videos Custom Field Product Reviews Write a Review Write a Review × GDC GDC Desktop 500A Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *