- Description
- Specifications
3-Foot USB to DB9 Serial Adapter Cable with Prolific PL2303 Chipset, 512-Byte FIFO, Screw-Lock DB9 Connector, and Cross-Platform Driver Support for Legacy Serial Device Connectivity
The StarTech 1P3FP-USB-SERIAL is a 3-foot (91 cm) USB to DB9 serial cable that adds an RS-232 COM port to any computer through USB-A, providing a reliable bridge between modern systems and legacy serial peripherals in IT, industrial, POS, and laboratory environments. The Prolific PL2303 chipset delivers communication at baud rates up to 921.6 Kbps with a 512-byte FIFO buffer, supporting 5/6/7/8 data bits and five parity modes for compatibility with equipment spanning decades of serial protocol standards.
The screw-lock nuts on the DB9 male connector secure the adapter to serial devices for vibration-resistant connections that withstand movement in server racks, production lines, and field deployments. Plug-and-play drivers install automatically on Windows, macOS, and Linux with no additional software required, and backward compatibility with all USB revisions ensures connectivity on any available USB port. Backed by a 3-year warranty with lifetime technical support, the adapter delivers long-term reliability for installations where serial connectivity is mission-critical.
Where the StarTech DB9 Cable Fits
- Server rooms and network closets requiring serial console access to switches and routers where the 3-foot cable length reaches rack-mounted equipment from a nearby laptop, screw-lock mounting prevents accidental disconnection during critical configuration sessions, and the Prolific chipset provides broad device compatibility
- Industrial automation connecting PLCs, sensors, and control systems to modern PCs where support for 5/6/7/8 data bits accommodates older industrial serial protocols, 921.6 Kbps throughput with 512-byte FIFO handles high-speed data acquisition, and the 3-year warranty provides long-term deployment confidence
- Retail and healthcare environments with barcode scanners, receipt printers, and medical instruments where plug-and-play cross-platform drivers eliminate IT overhead, the screw-lock connector maintains secure connections during daily use, and the lightweight 3-foot form factor keeps workstations organized
What the StarTech DB9 Cable Delivers
- Prolific PL2303 with 512-Byte FIFO: Prolific chipset delivers reliable serial communication at baud rates up to 921.6 Kbps with a 512-byte FIFO buffer, supporting 5/6/7/8 data bits and five parity modes (Odd/Even/Mark/Space/None) for broad legacy protocol compatibility.
- Screw-Lock DB9 Connection: Screw-lock nuts on the DB9 male connector provide vibration-resistant mounting to serial devices, preventing accidental disconnection in server racks, industrial equipment, and field deployments where cable security is essential.
- Cross-Platform Plug-and-Play: Automatic driver installation on Windows, macOS, and Linux provides immediate serial connectivity from any USB-A port without manual configuration, compatible with USB 2.0 and all previous USB revisions for universal host compatibility.
- Broad Serial Device Support: Connects to barcode readers, network switches, receipt printers, PLCs, medical devices, oscilloscopes, scales, and other RS232 serial peripherals through the standard DB9 male interface with reliable Prolific-based communication.
- 3-Year Warranty with Lifetime Support: Backed by StarTech's 3-year limited warranty with free lifetime 24/5 multilingual technical assistance for long-term deployment confidence in mission-critical serial communication environments.
What Is a DB9 Cable Used For?
A DB9 cable provides RS-232 serial communication between computers and peripheral devices that use the 9-pin D-sub connector standard. The StarTech 1P3FP-USB-SERIAL converts USB to DB9 RS-232, allowing modern computers without built-in serial ports to communicate with legacy equipment including network infrastructure (switches, routers, firewalls), industrial controllers (PLCs, sensors, motor drives), point-of-sale hardware (barcode scanners, receipt printers, cash drawers), and laboratory instruments (oscilloscopes, scales, measurement devices).
