Home › CPAP Parts & Accessories › ResMed S9 Power Supply 90 Watt 36821 ResMed S9 Power Supply 90 Watt 36821 DescriptionOriginal, OEM 90 watt Power Supply brick for the ResMed s9 CPAP and VPAP machines, item number 36821. Default Title - $67.91 $95.00 $67.91 Share 0 Tweet 0 Pin it 0