Overview Product Description 49213 - 3512-SDC - 64 kbps DSU/CSU SDC 3-Prt w/DualView External (Refurbished) 90 Day Warranty Product Videos Custom Field Product Reviews Write a Review Write a Review × Codex 49213 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *