Home › Frontpage › ResMed S9 Power Supply w/ Cord 90 Watt | 36821 ResMed S9 Power Supply w/ Cord 90 Watt | 36821 Description Original, 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