PrologyParts Index

STARTECH.COM PEXUSB321C

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

MPNPEXUSB321CSTARTECH.COMAdaptersUpdated

Key facts

Part number
PEXUSB321C
Brand
STARTECH.COM
Category
Adapters
Price
AUD 129.79≈ USD 90.32 Reference price (RRP)
Availability
On request — ask for a quote

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

Reference price history

Recorded reference and list prices over time. Not Prology selling prices.

Latest
AUD 129.79≈ USD 90.32
Oct 2026
Lowest recorded
AUD 129.79≈ USD 90.32
Highest recorded
AUD 129.79≈ USD 90.32
Recorded
2026
1 price point

AUD 129.79 rrp, recorded

Buy or sell STARTECH.COM PEXUSB321C

Buying STARTECH.COM adapters

Looking to buy the STARTECH.COM PEXUSB321C or a compatible adapter? Prology supplies new, refurbished and used STARTECH.COM adapters in Australia and the United States. Send the part number and quantity for a firm price.

Selling STARTECH.COM adapters

Have a spare or decommissioned PEXUSB321C? Prology buys used and surplus STARTECH.COM adapters — single units or whole lots — and replies with an offer within 1 business day. Sell your PEXUSB321C.

What is the STARTECH.COM PEXUSB321C?
The STARTECH.COM PEXUSB321C is a STARTECH.COM adapter – USB Adapter - PCI Express 3.0 x4 - Plug-in Card - UASP Support - 1 Total USB Port(s).
How much does the STARTECH.COM PEXUSB321C cost?
The reference price on record is AUD 129.79 (Oct 2026). It is a reference figure, not a selling price — ask Prology for a firm quote.
Where can I buy the STARTECH.COM PEXUSB321C?
It is not listed on the Prology store yet. Prology sources STARTECH.COM adapters on request — request a quote and we reply with a firm price and lead time within 1 business day.
Can I sell a used STARTECH.COM PEXUSB321C?
Yes. Prology buys used and surplus STARTECH.COM adapters, including the PEXUSB321C. Get an offer — sell outright or trade in against your next order.

Request a quote for PEXUSB321C

Tell us the quantity and condition you need. Prology replies with a firm price and lead time within 1 business day.

Replies within 1 business day. Your details are used only to answer this request — privacy.

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