What exactly are these cables?Left Cable: This is a vintage VGA Extension Cable (15-pin layout) or a standard 9-pin DB9 RS-232 Serial Cable, which was historically used to hook up older analog CRT monitors, early digital projectors, or legacy computer peripherals.Right Cables: These are DB9 to DB25 Null Modem Serial Cables. They feature a wider 25-pin D-sub port on one end and a smaller 9-pin port on the other, traditionally used for vintage dial-up modems, printer connections, or connecting two old computers directly together.