DB9/RS232/485/COM serial line
DB9 serial male-to-male cable connects your computer to devices with RS232 compatible (COM) ports.
Each end is equipped with 9-pin DB9 connector with screws to ensure easy and firm connection of data communication.
The wire in the cable is 28AWG, aluminum foil+metal woven mesh, which is stronger.
All 9 pins are pin-to-pin (pin arrangement: 1-1, 2-2, 3-3, 4-4, ..., 8-8, 9-9, GG)
It is widely used to connect PC laptops to some old RS-232 devices, such as scanners, modems, printers, plotters, cameras, bar code/embroidery machines, microcontrollers, test equipment.