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Black USB-A to DB9 serial cable with moulded connectors and thumbscrews

BENFEI USB to RS-232 DB9 Serial Adapter 1.8M

SKU CH-17AG-4EKT0

Connects legacy DB9 serial devices to a USB port using a Prolific PL-2303 chipset with 1.8 m cable

  • TypeDB9
  • ColorBlack
  • Cable Lengthinches
  • Changer TypeDB9
  • SpecificationsModem
  • Connector ADB9
  • Connects legacy serial gear via USB
  • Prolific PL-2303 chipset for broad OS support
  • 8 m cable reaches distant ports
  • Tinned copper conductors with triple shielding
  • Powered by USB port, no external adapter

USB to RS-232 DB9 Adapter

This BENFEI cable converts a USB Type-A port into a standard DB9 male serial connector. It uses the Prolific PL-2303 chipset to link legacy serial equipment such as modems, barcode scanners, label writers and industrial gear to modern computers. The 1.8 metre cable is powered from the USB port and requires a one-time driver installation before use.

Engineers maintaining serial hardware

Technicians configuring routers, GPS units, PDAs or ISDN terminal adapters will find the full RS-232 signal set including RTS, CTS, DSR, DTR, DCD and RI useful. Buyers who need a USB-to-VGA video link or a gender changer for existing DB9 cables should look at a different product because this adapter only provides a serial data path.

Prolific PL-2303 chipset

The PL-2303 controller determines operating-system support across Windows 11 down to 98, Mac OS X 10.6 and later, and Linux kernel 2.4.0 onward. If your target system lacks a driver for this chipset the adapter will not enumerate as a COM port.

Highlights

  • Connects legacy serial gear via USB
  • Prolific PL-2303 chipset for broad OS support
  • 8 m cable reaches distant ports
  • Tinned copper conductors with triple shielding
  • Powered by USB port, no external adapter

Specifications

BrandBENFEI
Model000151
Part Number000151black
TypeDB9
ColorBlack
Cable Lengthinches
Changer TypeDB9
SpecificationsModem
Connector ADB9
Connector BDB9
Dimensions1.0 in x 1.0 in x 1.0 in
Weight1 ounces
Package Quantity1

Questions about this item

Which BENFEI USB-to-serial cable length should I pick?

The adapter ships with a 1.8 m cable; no other lengths are offered for this model.

What throughput will I actually see on the RS-232 side?

The Prolific PL-2303 chipset delivers up to 1 Mbps over the DB9 link, which is the practical limit for connected serial gear.

Does the USB 2.0 interface cap the speed below 1 Mbps?

USB 2.0 provides far more bandwidth than the adapter's 1 Mbps serial rate, so the RS-232 side remains the bottleneck.

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