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STARTECH.COM

STARTECH.COM PEXUSB321C

USB Adapter - PCI Express 3.0 x4 - Plug-in Card - UASP Support - 1 Total USB

MPNPEXUSB321CAdaptersUpdated

Key facts

Part number
PEXUSB321C
Brand
STARTECH.COM
Category
Adapters
Price
AUD 129.79≈ USD 90.61 RRP
Availability
On request — ask for a quote

The STARTECH.COM PEXUSB321C is an adapter listed in the Prology Parts Index. RRP AUD 129.79≈ USD 90.61 (Oct 2026). Request a quote for volume pricing, or sell us your used adapters.

Overview

This PCIe USB 3.2 Gen 2x2 controller card installs into an available PCI-Express x4 slot in your computer and enables you to upgrade your current system by adding a USB-C™ (20Gbps) port.

Add a 20 Gbps USB Type-C Port to Your Desktop Computer

The controller card enables you to connect USB-C Gen 2x2 (20 Gbps) devices to your desktop computer. The USB-C port is ideal for connecting USB devices such as external hard drives and solid state drives or charging and syncing your mobile devices. The USB-C port provides up to 15W (5V/3A) of power and is backward compatible with USB 3.2 Gen 2 (10 Gbps) and USB 3.2 Gen 1 (5 Gbps) devices.

Note: USB 3.2 Gen 2 (10 Gbps) is also know as USB 3.1 Gen 2 (10 Gbps), and USB 3.2 Gen 1 (5 Gbps) is also know as USB 3.0 and USB 3.1 (5 Gbps).

SuperSpeed USB 3.2 Gen 2x2 (20 Gbps) Performance

The USB 3.2 Gen 2x2 card features an ASMedia ASM3242 host controller that utilizes x4 lanes of the PCIe 3.0 bus, making the card capable of speeds up to 20Gbps and enabling fast access to high-performance devices like NVMe drives and SSDs. The controller card supports Multiple INs to reduce bandwidth loss when multiple devices are connected through a USB Hub (Note: The USB hub must also support this feature). The card also supports UASP for improved performance with storage devices.

Wide Installation Compatibility

This add-on card includes both full-profile and low-profile installation brackets ensuring you can install it into either a full or low-profile PCIe 3.0 x4 slot (backward compatible w/PCIe 2.0). For wide platform support the card is compatible with Windows, Linux and macOS. For hassle-free installation the drivers install automatically on computers running Windows 8 or higher. Works w/USB 3.1/3.0/2.0 devices

  • Adds a port to your PC through the PCI Express 3.0 x4 interface
  • Featuring 1 USB ports to connect USB-compatible devices

Specifications

General

UASP Support
Yes
Host Interface
PCI Express 3.0 x4

Mac OS X 12.0 Monterey

Total Number of USB Ports
1
Number of USB 3.2 Ports
1
Platform Supported
PC

Linux

Weight (Approximate)
36.9 g
Form Factor
Plug-in Card
Length
50.8 mm
Height
22.9 mm
Width
78.7 mm
Product Type
USB Adapter

Manufacturer Website Address

Product Name
PCI Express USB Card

Price history

Latest
AUD 129.79≈ USD 90.61
Oct 2026
Lowest recorded
AUD 129.79≈ USD 90.61
Highest recorded
AUD 129.79≈ USD 90.61
Recorded
2026
1 price point

AUD 129.79 rrp, recorded

Why buy from Prology

  • Tested before dispatchEvery item is checked by our technicians before it ships.
  • Warranty includedParts are covered by a Prology warranty – ask us for the terms.
  • Fast shippingDispatched from our Australian and US locations.
  • Real people, quick repliesQuotes and answers within 1 business day.

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More STARTECH.COM Adapters

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Prology buys used and surplus adapters – including PEXUSB321C. Sell outright or trade in against your next order. Offer within 1 business day.