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Black USB-A to DB9 serial adapter cable, one foot long

STARTECH

STARTECH ICUSB232V2 USB 2.0 to RS232 serial cable 1 ft PL2303-HXD 921.6 Kbps

SKU CH-EWH9-H2Q5T MPN ICUSB232V2

Adds a single RS232 serial port via USB 2.0 using a Prolific PL2303-HXD chipset at up to 921.6 Kbps

  • Connector count2
  • Connector detailsConnector A: USB A (4 pin) Male Connector B: DB-9 (9 pin; D-
  • Connector genderMale to Male
  • Product typeCable Connectors
  • Product colorBlack
  • DetailsBus Type: USB 2.0 Chipset ID: Prolific - PL2303-HXD Industry

Style Transparent Blue Connectors

  • Add an RS232 serial port via USB
  • Prolific PL2303-HXD chipset delivers 921.6 Kbps throughput
  • 512-byte FIFO buffer supports 5-to-8 data-bit framing
  • USB 1.1 and 2.0 compliant for broad host compatibility
  • 1 ft cable with USB-A and DB9 male connectors

USB 2.0 to RS232 serial adapter

This adapter cable adds a DB9 serial port to a laptop or desktop through a USB 2.0 Type A connection. It uses the Prolific PL2303-HXD chipset to provide a single RS232 interface for legacy peripherals. The one-foot cable length keeps the link short for desk or bench use. It is suited for technicians and integrators who need a straightforward serial connection.

Practical limits of the USB 2.0 and RS232 interfaces

The link conforms to USB 1.1 and 2.0 electrical specifications and the RS232 signalling standard. Maximum throughput is 921.6 Kbps with configurable data bits of 5, 6, 7 or 8. Flow control options include None, Xon/Xoff and RTS/CTS, while a 512-byte FIFO buffers incoming data. Cable length is fixed at one foot, so the host port must be close to the target device.

Capacity and headroom for typical serial workloads

The adapter comfortably handles console access, barcode scanners, POS terminals and industrial monitors that operate at standard baud rates. The 512-byte FIFO and hardware flow control prevent overruns during sustained transfers. It is not intended for high-speed bulk endpoints or multi-port expansion, and the single DB9 male connector limits use to one serial device at a time.

How it compares

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

Price $49.99
Pricier than about 80% of the 93 comparable items (median $21.99).

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Specifications

Product
Brand nameStarTech.com
Model nameICUSB232V2
Product typeCable Connectors
Product colorBlack
Ports & slots
Connector count2
Connector detailsConnector A: USB A (4 pin) Male
Connector B: DB-9 (9 pin; D-Sub) Male
Connector genderMale to Male
Size & build
Shipping weight0.05 kg
Package size215 × 193 × 15 mm

Other versions of this model

2 more in the same range

Questions about this item

Should I pick the 1 ft length or a longer cable for my POS device?

The 1 ft length keeps the USB-to-RS232 link short and tidy for bench or counter setups; choose a longer cable only if the device sits farther from the host port.

What does the 921.6 Kbps figure mean when the adapter is plugged into a notebook?

It is the maximum serial line rate the PL2303-HXD chipset can sustain, so connected equipment such as barcode readers or monitors can transfer at up to 921.6 Kbps.

The spec lists USB 1.1/2.0 and RS232 — what does that cap in practice?

The USB 2.0 interface and RS232 electrical standard together limit the connection to the 921.6 Kbps serial throughput stated for the adapter.

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