There are mainly two ways to upload programs for the LED signs: USB drive and Wi-Fi. Firstly, USB drive. It has many different names, U disk=USB flash drive=USB disk=USB thumb drive. USB drive is used as a tool to move programs from the computer to the LED display, which is very convenient to use. But it still needs a computer to generate the program, and the software used to design the program in the industry can only run on Microsoft’s Windows version, so you must have a computer. Note that the software does not support Apple’s MAC, nor does Google’s Chromebook.