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Rocstor USB to DB9 male serial adapter cable 3 ft black finish

Rocstor

Rocstor USB to Serial Adapter 3 ft DB9 Male RS232 Prolific PL2303 921.6 kbps

SKU CH-WFBF-T4MBM

Adds a DB9 male RS-232 serial port via USB Type-A using a Prolific PL2303 chipset at up to 921.6 kbps with a 0.91 m cable, compatible with Windows, macOS and Linux

  • Adds RS-232 DB9 serial port to USB computers
  • Prolific PL2303 chipset delivers 921.6 kbps transfer rate
  • 3 ft cable (0.91 m) reaches nearby devices
  • Works with Windows, macOS and Linux
  • USB 2.0 Type-A plug fits standard host ports

USB to Serial Adapter for Legacy Devices

The Rocstor USB to Serial Adapter adds an RS-232 DB9 COM port to a laptop or desktop through a USB Type-A connection. It is built for IT professionals, point-of-sale operators and industrial users who need to control barcode scanners, receipt printers, PLCs or network switches from modern hosts. The three-foot cable uses a Prolific PL2303 chipset and supports data rates up to 921.6 kbps.

Replaces Missing Native Serial Ports

This cable replaces an onboard DB9 port that current laptops and desktops no longer include. The upgrade is worth it when legacy RS-232 peripherals must stay in service but the host only offers USB 2.0 or newer Type-A sockets. It also suits temporary field-service kits where a permanent expansion card is impractical.

Check Host Port and Driver Support

Verify the computer has an available USB Type-A port and runs Windows, macOS or Linux with current updates. Confirm the target peripheral uses a standard DB9 male RS-232 interface and does not require handshake lines beyond what the PL2303 provides. Ensure the three-foot reach fits the workspace without strain.

Highlights

  • Adds RS-232 DB9 serial port to USB computers
  • Prolific PL2303 chipset delivers 921.6 kbps transfer rate
  • 3 ft cable (0.91 m) reaches nearby devices
  • Works with Windows, macOS and Linux
  • USB 2.0 Type-A plug fits standard host ports

Specifications

BrandRocstor

Questions about this item

Does the DB9 male connector on this 3 ft cable mate directly with the DB9 female port on my barcode scanner?

Yes, the cable ends in a DB9 male RS-232 connector that plugs straight into a standard DB9 female serial port on scanners, receipt printers, PLCs or other legacy devices.

Do I need to install a driver before plugging the USB Type-A end into my laptop, or does it work immediately?

The integrated Prolific PL2303 chipset requires a driver on Windows, macOS and Linux; install the appropriate PL2303 driver for your OS first, then connect the adapter to a USB Type-A port.

Will the USB Type-A connector or the DB9 shell wear out after repeated daily plugging in POS use?

Both connectors are standard passive interfaces; normal commercial use does not impose a defined replacement interval, but inspect the cable strain relief and connector pins periodically for physical damage.

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