The two function power meter reports in easy to read LED numerals the status of your power supply and consumption. Toggle between volts and amps with a convenient push button on the front of the chassis. Voltage is measured to the nearest 0.10 VAC. Amperage is measured to the nearest 0.10 amperes in a range from 0.20A to 25.0A. One USB port is provided on the front and one on the back of the chassis. These five volt DC connections are usable for utility lighting or powering accessories. Connect an inexpensive, flexible USB light fixture for lighting in the front or back of the rack. Both USB ports can also be used to charge accessories including an iPhone or iPad. One AC outlet is located on the front. Nine are on the back. The rear outlets are rotated to accommodate wall warts and include extra generous spacing between four of them. Model RP 100-20A includes a single NEMA 5-20R, rated for a twenty amp load. RP 100-20A features a twelve foot, twelve gauge power cord with a NEMA 5-20P plug which requires a twenty amp, 5-20R, receptacle for connection to utility power. The multi stage power conditioning components include a series choke and fast reaction time surge clamps across hot, neutral and ground. Tour Class (TM) Chassis - This professional grade, ten inch deep enclosure is formed from a single piece of cold rolled steel. Reinforced mounting brackets and a flush mount top complete a package that's been used to rack mount other products weighing over 200 pounds. The extra chassis depth allows easy access to the rear receptacles while mounted in a rack.