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Black USB-to-serial hub with four DB9 ports

STARTECH

STARTECH ICUSB2324 4 Port USB to Serial Converter

SKU CH-V2V5-6JZCF MPN ICUSB2324

Adds four DB9 serial ports to a computer through one USB 2.0 connection, bus powered with no external adapter needed

  • Adapter typeUSB to DB9 (RS-232)
  • First connector1x USB 2.0 Type B female
  • Second connector4x DB-9 male
  • Product colorBlack
  • Key featuresBus powered, no external power adapter required Easy Plug-an
  • Product weight0.8 lb (0.36 kg)

Model 4 ports (Desktop)

  • Connect four serial devices through one USB port
  • Bus-powered design removes need for external adapter
  • Four DB9 male ports provide RS232 connectivity
  • Works with USB 1.1 and USB 2.0 systems
  • Plug-and-play setup requires no driver configuration

Four DB9 ports over one USB link

The ICUSB2324 adds four RS232 serial connections to a laptop or desktop through a single USB 2.0 Type B port. Each port presents a standard DB9 male connector for legacy instruments, industrial controllers or networking gear. The hub draws all power from the USB bus, so no external adapter is needed. It suits engineers and technicians who must talk to multiple serial devices at once.

Replaces a single-port adapter

Older machines often provide only one DB9 header or none at all; this hub multiplies that single USB connection into four independent serial channels. The upgrade is worthwhile when field service, lab automation or point-of-sale systems require simultaneous access to several RS232 endpoints. It is not for users who need only one occasional serial link or who require galvanic isolation between ports.

Steady throughput across all four channels under

The FTDI chipset maintains stable communication on every port during long logging sessions or continuous polling cycles. Bus-powered operation keeps the enclosure cool without a fan, and USB 1.1 compliance ensures broad host compatibility. The adapter does not suit applications that demand hardware handshaking lines beyond the standard RS232 set or that require sustained data rates above the USB 1.1 bulk endpoint limit.

How it compares

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

Price $86.99
Pricier than about 91% of the 1,430 comparable items (median $14.99).

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Specifications

Product
Brand nameStarTech.com
Model nameICUSB2324
Product colorBlack
Adapter typeUSB to DB9 (RS-232)
Ports & slots
First connector1x USB 2.0 Type B female
Second connector4x DB-9 male
Size & build
Product weight0.8 lb (0.36 kg)
Shipping weight0.36 kg
Package size216 × 150 × 53 mm

Questions about this item

Will the single USB 2.0 Type B port on the ICUSB2324 fit my computer's USB 1.1 or 2.0 socket?

The adapter uses one USB 2.0 Type B female connector that is fully compliant with USB 1.1 specifications and compatible with USB 2.0 ports on any notebook or desktop.

What is the common mistake when installing the four DB9 serial ports on this bus-powered hub?

Users often forget to install the FTDI driver before plugging in the ICUSB2324; the four DB-9 male ports will not appear as COM ports until the driver loads.

Which part of the STARTECH ICUSB2324 is most likely to need replacement after heavy industrial use?

The four DB-9 male connectors endure repeated mating cycles and cable strain, so the serial port hardware itself is the component most likely to require replacement later.

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