by raceamerica » Wed Oct 31, 2018 2:23 pm
There are several models of 4520's and the international models 4620.
4520U/4620U connect to a PC USB port and gets its power from the USB cable, no additional AC Power Adapter required.
4520A2/4620A2 connect to a RS232 device like a printer or a LED display. These units take a 9VDC-12VDC 300mA min. AC Power Adapter with a 2.1mm barrel connector.
4520A4/4620A4 connect to a RS422 device like a large LED display. These units take a 9VDC-12VDC 300mA min.AC Power Adapter with a 2.1mm barrel connector.