FTDI-Chip-TTL converter Null modem crossover USB connection bridge PC communication cable USB connection cable between two computers Communication cable between PC host Communication cable Null modem USB connection cable A general USB cable can connect two computers, the USB Port cannot communicate, however. It can only be one host and one slave (U disk, mobile hard disk, etc.). But now, many devices, such as smart computers, set-top boxes, MINI PCs, and industrial computers, are essential PCs and host computers. It is particularly useful for connecting and debugging between two computers with USB as the main device, e.g. B. to debug Android devices and computers together with only USB output, as well as debug computers and computers together, which is very easy and simple practical In addition, this line is also suitable for Android host to some debug external devices and transfer some command data. The software commonly used is the super terminal that came with the computer or other software that supports serial communication What is a USB-LINK cable? This is a line that is used to replace the previous NULL MODEM for modulation and demodulation of DB9 out of order 1 The USB connection cable is similar to a normal USB connection cable, is in the middle however, an additional package (signal conversion chip). Its core functions are concentrated in this package. The USB connection cable is also known as a USB data bridge cable. This is a connection with two machines via the USB interface. Its function is to establish the connection between two computers and share the other's resources.