... be two-way, high or low speed read card information. Hot sales magnetic stripe card reader UB-J400M Product usage:UB · J400M small ... output serial port output, USB output.UB · J400M small gold card reader series can be read with ISO standard of first, second ... 1,2,3 track simulation keyboard outputUB · J400M small gold card reader series can take function expansion as follows:(U) USB simulation ...