Onyx Deskset Product Maintenance Agreement (PMA)$260.00 The Onyx Deskset Product Maintenance Agreement (PMA) extends the manufacturer’s two year warranty by adding an additional two years. Onyx Deskset Product Maintenance Agreement (PMA) quantity Add to cart Category: Warranties, Etc Related products ZoomText Magnifier/Reader Service Maintenance Agreement (SMA) $175.00 Add to cart JAWS Professional Service Maintenance Agreement (SMA) $320.00 Add to cart Focus 14 (V5) Product Maintenance Agreement (PMA) $262.50 Add to cart