The USB to RJ9 4P4C RS232 Serial Converter Adapter Cable is a professional-grade solution for programming and upgrading Meade ETX-125, ETX-90, ETX-70, LXD-75, LX90 Autostar, and Audiostar devices. Its durable PVC jacket in sleek black, 28AWG*4C, OD3.5mm design, and FTDI FT232RL chipset ensure excellent performance. With a length of 6ft/1.8m (or custom-made) and USB male to RJ9/RJ10 4P4C jack connectors, this cable enables seamless USB to RS232 serial connection for hassle-free data transfer.