Startech - StarTech.com USB to Serial Adapter 3ft w/DB9-DB25, Prolific PL-2303, USB to RS232

This Insignia NS-PU99501 cable allows you to connect a device with an RS-232 (DB9) serial port to a USB hub or USB-equipped PC or Mac and supports data transfer rates of more than 115 Kbps for rapid performance.

The 1-Port USB to Serial RS-232 Adapter is a compact, rugged solution for adding a reliable COM port to modern computers and devices. Built with a durable metal housing and the trusted FTDI chipset, it ensures stable performance across Windows, macOS, and Linux systems. Supporting baud rates up to 921.6 Kbps, automatic handshake, and consistent COM port retention, it’s ideal for GPS, printers, modems, CNC machines, PLCs, and other industrial equipment. Designed for flexible installation, the hub includes DIN-rail clips and surface mounting flanges, while built-in 25kV ESD and 600W surge protection keep connected devices safe. With LED indicators for real-time monitoring and plug-and-play convenience powered directly from your computer’s USB port, this hub delivers dependable serial connectivity for demanding environments.

The USBG-232 USB to Serial Adapter is your go-to solution for adding a reliable RS-232 COM port to modern systems running Windows 11, 10, 8, or 7. Built with the latest FTDI chipset, it ensures seamless driver installation - just plug it in and Windows will handle the rest with certified drivers from Microsoft. With support for full RS-232 signals, a high-speed baud rate up to 921.6Kbps, and LED indicators for real-time data transmission monitoring, this compact 12-inch adapter is perfect for legacy device connectivity. It's powered directly via USB and features 15kV ESD protection for safe, stable performance across Windows, macOS, and Linux setups.