QS Link Power Supply The QSPS-DH-1-75 QS link power supply provides up to 75 Power Draw Units (PDUs) on a QS link. The QSPS-DH-1-75 powers additional compatible accessories and devices, allowing them to be added to a QS system. Specifications Model Number • QSPS-DH-1-75 Input Power • Nominal input voltage: 100–277 V~ • Frequency: 50/60 Hz • Current consumption, fully loaded (typical): 0.5 A (277 V~) 0.7 A (230 V~) 1.0 A (120 V~) 1.3 A (100 V~)