Aim-TTi Power Supply Dual 0-30V/0-3A USB/RS232/LAN(LXI) PL303QMD-P - Aim-TTi PL303QMD-P, The Aim-TTi PL303QMD-P achieves an exceptional power density for a linear regulated power supply by offering up to 90W from a ¼ rack 3U sized casing. This gives it an unusually small bench footprint taking up less space on a crowded bench. For rack-mount application, up to four units can be mounted into a single slot. Despite its small size and linear regulation, the Aim-TTi PL601-P generates relatively little heat through the use of an advanced phase controlled pre-regulator. This gives it significantly higher energy efficiency than conventional linear regulated designs, particularly when supplying lower voltages. The internal heat-sinks use fan-assisted convection cooling in order to remove the heat with minimal fan noise. To meet the varying needs of todays engineers, the Aim-TTi PL303QMD-P has a comprehensive array of interfaces is provided. RS-232, USB and LAN (Ethernet) with LXI s