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Black USB-C to DB9 serial adapter cable with straight-through connector

STARTECH

STARTECH ICUSB232C USB-C to DB9 serial converter

SKU CH-7C17-X7VJ2 MPN ICUSB232C

Connects a DB9 serial device to a USB-C port at up to 921.6 Kbps with RTS/CTS flow control

  • Adapter typeUSB to DB9 (RS-232)
  • First connector1x USB Type-C male
  • Second connector1x DB-9 male
  • Product colorBlack
  • DetailsHumidity: 0 to 65% RH Operating Temperature: 0 to 60 degree
  • Product dimensions15.7 in × 1.4 in × 0.8 in (L × W × H)
  • Connect RS232 DB9 devices to USB-C ports
  • High-speed 921.6 Kbps maximum baud rate
  • Works with Windows, macOS and Linux systems
  • Bus-powered design needs no external supply
  • 30,000-hour MTBF for long-term reliability

USB-C to DB9 serial adapter

The StarTech ICUSB232C connects an RS-232 DB9 peripheral to a USB-C host. It supports Windows, macOS and Linux without an external power supply. The cable is 15.70 inches long and operates from 0 to 60 degree C.

Replaces legacy serial ports

Use this adapter when a modern laptop or tablet lacks a native DB9 port but must talk to industrial gear, network switches or older UPS units. The 921.6 Kbps baud rate and 512 byte FIFO handle most console and telemetry tasks. It is not for buyers who need isolated or optically coupled links.

Plug-and-play installation

Driver installation is automatic on supported operating systems; the quick-start guide covers the few manual steps. Ensure the DB9 gender and pinout match the target device — straight-through cables will not work with null-modem equipment. Humidity above 65 percent RH or temperatures outside the rated range can cause intermittent errors.

How it compares

Measured against everything we stock in USB Adapter Cables & Dongles, at today’s prices. Recalculated every night.

Price $28.99
Pricier than about 86% of the 1,430 comparable items (median $14.99).

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Specifications

Product
Brand nameStarTech.com
Model nameICUSB232C
Product colorBlack
Adapter typeUSB to DB9 (RS-232)
Ports & slots
First connector1x USB Type-C male
Second connector1x DB-9 male
Size & build
Product dimensions15.7 in × 1.4 in × 0.8 in (L × W × H)
Shipping weight0.05 kg
Package size202 × 192 × 3 mm
In the box
In the box1 x Serial Adapter Cable
1 x Quick-Start Guide

Questions about this item

What physical space does the 15.70" x 1.40" x 0.80" cable need for a DB-9 male connection?

The adapter requires clearance for a 15.70 inch long cable body and a standard DB-9 male connector that mates with a straight-through RS-232 port on your peripheral.

How is the ICUSB232C installed, and which driver step is often missed on Windows?

Plug the USB-C male end into the host; Windows Update usually loads the driver automatically, but if the COM port does not appear, download the signed driver from StarTech.com and run the installer before reconnecting the cable.

What maintenance or replacement should be planned given the 30,000 hour MTBF and 0–60 °C operating range?

Expect roughly 3.4 years of continuous use at room temperature; if the adapter runs near 60 °C or in 65 % RH humidity, schedule replacement sooner because sustained heat and moisture accelerate component ageing.

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