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Tripp Lite
Tripp Lite Keyspan High Speed USB-C to Serial Adapter DB9 RS232 Cable, 3 Feet / 0.91 Meters
USA-19HS-C

Tripp Lite Keyspan High Speed USB-C to Serial Adapter DB9 RS232 Cable, 3 Feet / 0.91 Meters

Modern laptops drop legacy ports, but serial gear in utility rooms and telecom racks still needs a direct line. We built this Keyspan adapter to bridge that gap over a USB-C jack. It handles serial signals without requiring external power blocks or awkward bench wiring.

★★★★★4.6 out of 5 from 84 ratings
$47.99

Price as the listing last showed it. Listings move, so the figure on the page you land on is the one that counts at checkout.

  • Provides full modem control and hardware/Software flow control
  • Supports data transfer speeds up to 230 kbps—double the speed of a PC Serial port
  • Works with any USB-C cable up to 16 ft. Long (detachable 3 ft. Cable is included)
  • Plug-and-play operation allows you to set it up and begin using it immediately
What it does

How this one is built

Serial interface

The adapter communicates directly with serial modems, industrial controls and legacy gear. Full hardware and software flow control keeps traffic orderly across the connection.

Detachable link cable

A detachable USB-C lead comes in the package and handles the connection from your computer. You can swap in longer USB-C cabling if the job calls for extra reach.

Fast data throughput

Signal processing inside the unit doubles the typical throughput of an older computer serial port. That keeps diagnostic polling and configuration scripts moving along without lag.

Field installation

Plug the lead into your machine and attach the DB connector to the terminal. The unit needs no separate power brick, drawing everything it requires straight from the host bus.

On the nameplate

These are the figures published for this unit. Where a number is missing here it was not printed on the listing, and we would rather leave the row out than fill it with a guess.

Specifications
ConnectorUSB Type C
ColorBlack
Weight0.02 kg
Warranty3-year limited warranty
USA-19HS-C$47.99