Add an RS232 serial port to your laptop or desktop via USB. This ICUSB2321FIS adapter converts a USB port into a DB-9 RS232 connection with integrated optical isolation (2500V) and surge protection. Supports COM port retention, max. baud rate of 921.6 Kbps and broad OS compatibility (Windows, macOS, Linux).
The StarTech.com ICUSB2321FIS USB to RS232 adapter cable provides professional serial connectivity with advanced security features. Featuring the FTDI FT232RL chipset and integrated 2500V optical isolation circuits, it protects your sensitive serial devices against electrical damage. The adapter supports configurable serial parameters: 7 or 8 data bits, 1 or 2 stop bits, five parity modes (none, odd, even, mark, space) and maximum baud rate up to 921.6 Kbps. The 256-byte FIFO buffer and 500W bidirectional surge protection ensure reliable data transfer. USB-powered with no external power adapter required. Broad OS support: Windows (98SE through 11), macOS 10.6-13.0 and Linux kernel 3.0+. Ideal for point-of-sale systems, digital signage, barcode scanners and legacy industrial devices.
