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Black 6 ft USB-A male to DB9 male serial cable

STARTECH

STARTECH ICUSB2321F USB to RS232 serial cable 6 ft DB9 male to USB A male 115.2Kbps

SKU CH-RPJP-HXB5Z MPN ICUSB2321F

A 6 ft USB-A to DB9 serial cable that adds an RS232 port with COM retention, powered from USB and rated up to 115.2Kbps

  • Connector count2
  • Connector detailsUSB to Serial RS232 Connector Type(s): 1 - DB-9 (9 pin; D-Su
  • Connector genderMale to Male
  • Product typeCable Connectors
  • Product colorBlack
  • Overall length6 ft (1.83 m)
  • Add RS232 serial connectivity via a single USB port
  • FTDI chipset ensures broad OS and legacy device support
  • USB-powered design removes the need for an external adapter
  • 6 ft cable length gives flexible placement options
  • COM port retention survives system reboots for consistent operation

USB to RS232 serial adapter

The StarTech ICUSB2321F adds a DB9 serial port to any computer with a USB A socket. It draws power directly from the USB connection so no external adapter is needed. The cable uses an FTDI UART chip to provide reliable COM port retention across reboots. Length is 6 ft and the maximum baud rate is 115.2Kbps.

Replaces legacy onboard ports

Modern laptops and desktops rarely include native RS232 headers, making this cable the direct substitute for built-in serial I/O. The jump is worthwhile when industrial equipment, networking gear or point-of-sale devices still require a DB9 link. COM retention removes the need to reassign ports after every restart. No external power brick simplifies deployment in tight racks or field kits.

Suits technicians and integrators

Engineers configuring routers, PLCs or legacy instruments will find the plug-and-play operation fits existing workflows. The male-to-male connectors mate with standard DB9 panels without gender changers. Buyers who need multiple simultaneous serial ports should look at multi-port alternatives. Users requiring galvanic isolation or higher baud rates will need a different class of adapter.

How it compares

Measured against everything we stock in RS-232 Serial Cables, at today’s prices. Recalculated every night.

Price $33.99
Pricier than about 69% of the 93 comparable items (median $21.99).

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Specifications

Product
Brand nameStarTech.com
Model nameICUSB2321F
Product typeCable Connectors
Product colorBlack
Ports & slots
Connector count2
Connector detailsUSB to Serial RS232
Connector Type(s): 1 - DB-9 (9 pin; D-Sub) Male
Connector Type(s): 1 - USB A (4 pin) Male
Connector genderMale to Male
Size & build
Overall length6 ft (1.83 m)
Shipping weight0.18 kg
Package size174 × 141 × 34 mm

Questions about this item

What USB port and serial connector does the ICUSB2321F need to plug into?

The cable has a USB Type-A male plug for the host and a DB-9 male connector for the RS232 device.

Which driver step is often missed when installing the ICUSB2321F on Windows?

After plugging in the cable, you must install the FTDI driver so the adapter appears as a persistent COM port that survives reboots.

What part of the ICUSB2321F is most likely to wear out first with daily use?

The USB Type-A plug and DB-9 connector see repeated insertion cycles, so the cable itself is the component that may eventually need replacement.

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