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Black USB header to dual DB9 serial adapter with 24 inch cable and low profile brackets

STARTECH

STARTECH ICUSB232INT2 2 Port USB to RS232 Adapter 24

SKU CH-8K10-7X60R MPN ICUSB232INT2

Adds two RS232 serial ports via an internal USB motherboard header, delivering up to 115200 bps with FTDI chipset and low-profile brackets included

  • ColorBlack
  • Cable Length24"
  • Changer TypeUSB to DB9 (RS-232)
  • SpecificationsConnector Types: 2 - DB-9 (9 pin; D-Sub) Male Interface: ser
  • Connector A1 - IDC (10 pin; Motherboard Header) Female
  • Connector B2 - DB-9 (9 pin; D-Sub) Male
  • Adds two serial ports via a single USB motherboard header
  • FTDI chipset supports 115200 bps for reliable data transfer
  • Bus-powered design removes the need for an external supply
  • Includes low-profile brackets for compact chassis installations
  • 24-inch cable length allows flexible internal routing

Two serial ports from a USB header

The ICUSB232INT2 adds two RS232 DB9 ports through a single 10-pin motherboard header. It draws power from the USB bus so no external supply is needed. The 24-inch cable reaches most internal routing paths. Legacy equipment and industrial gear connect directly without a separate expansion card.

Steady throughput with FIFO buffers

On-chip FIFO receive and transmit buffers smooth data flow during continuous transfers. COM-port retention keeps the same port assignments after reboots or driver reloads. The FTDI chipset sustains the rated 115200 bps without drop-outs. Bus power remains stable because the adapter draws only what the header provides.

Replaces add-in serial cards

This adapter removes the need for a PCI or PCIe serial card when a free USB header exists. The low-profile bracket fits slim chassis where full-height cards cannot. It is not suited for systems that lack an internal USB header or that require more than two serial ports.

Highlights

  • Adds two serial ports via a single USB motherboard header
  • FTDI chipset supports 115200 bps for reliable data transfer
  • Bus-powered design removes the need for an external supply
  • Includes low-profile brackets for compact chassis installations
  • 24-inch cable length allows flexible internal routing

Specifications

BrandStarTech.com
ModelICUSB232INT2
ColorBlack
Cable Length24"
Changer TypeUSB to DB9 (RS-232)
SpecificationsConnector Types: 2 - DB-9 (9 pin; D-Sub) Male
Interface: serial
Number of Ports: 2
Card Type: Low / Standard Profile
Max Baud Rate: 115200 bps
Data Bits: 7, 8
Stop Bits: 1, 2
Parity: None, Odd, Even, Space, Mark
Bus Type: Motherboard Header
Internal Ports: 1 - IDC (10 pin; Motherboard Header) Female
External Ports: 2 - DB-9 (9 pin; D-Sub) Male
Chipset ID: FTDI FT232R
Microsoft WHQL Certified: Yes
Operating Temperature: -40°C to 85°C (-40°F to 185°F)
Storage Temperature: -65°C to 85°C (-85°F to 185°F)
Connector A1 - IDC (10 pin; Motherboard Header) Female
Connector B2 - DB-9 (9 pin; D-Sub) Male
FeaturesSingle chip USB to asynchronous serial data transfer interface
Supports COM port retention
Bus Powered – no separate power supply or battery required
FIFO receive and transmit buffers for high data throughput.
Synchronous and asynchronous bit bang interface options with RD# and WR# strobes
UHCI/OHCI/EHCI host controller compatible
USB 2.0 Full Speed compatible
Dimensions0.70" x 4.70" x 2.70"
Weight0.14 lb.
Package Contents1 - USB Header to Serial Adapter
2 - Low profile bracket
1 - Driver CD
1 - Instruction Manual
Shipping weight0.16 kg
Package size168 × 142 × 33 mm

Questions about this item

How much power does the ICUSB232INT2 draw when both serial ports are active all day?

The adapter is bus powered from the USB motherboard header, so it needs no separate supply and adds only a small load to the 5 V rail.

What motherboard header must be free to install this adapter?

A single 10-pin IDC USB header is required; the package includes a 24" cable and both low-profile and standard brackets for the two DB-9 ports.

Will the ICUSB232INT2 work with legacy equipment that expects 7 data bits and even parity at 115200 bps?

Yes — the FTDI chip supports 7 or 8 data bits, 1 or 2 stop bits, and none, odd, even, space or mark parity up to the full 115200 bps rate.

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