Simple null modem cable (3 wire type and no hardware handshaking) extends a COM port connection between computer and some old device with RS-232 compatible
Wired as a 9 pin serial port Null-Modem cord that 2-3 line are crosslinked (only TX/RX data and signal ground wires connected); standard shielded with AL foil
DB9 female to female adapter extender equipped with screws on each end to ensure an easy and solid connection for stable data communication
The wires inside are of 30AWG gauge and easy to solder to, and they connect to the pins in the order of the standard wire color code
5 feet short serial cord for hooking up RS232C equipment like scanner, Modem, printer, plotter, camera, barcode / embroidery machine, touchscreen, microcontroller, factory test equipment