HP 5063-8389 - 5.25-inch filler panel (Quartz Gray) - For empty 5.25-inch drive bays above the Hot-Swap drive bay Retail
HP 5190-1773 - Power supply filler panel (HH3C4.124.0134MX,PWR Panel,S6820-32H) - Mounts in the unused power supply bays Retail