StarTech.com 1-Port USB 3.2 Gen 2x2 PCIe Card - USB-C SuperSpeed 20Gbps PCI Express 3.0 x4 Host Controller Card - USB Type-C PCIe Add-On Adapter Card - Expansion Card - Windows & Linux

Manufacturer: Startech | Model: PEXUSB321C | Product ID: 5838 | Warranty: 2 Years
£56.65 (inc. VAT)
1 in stock
100% Money Back Guarantee - Risk Free

Product Technical Specification

Ports & interfaces
Host interfacePCIe
Output interfaceUSB 3.2 Gen 2 (3.1 Gen 2)
Expansion card standardPCIe 3.0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
Design
InternalYes
Product colourRed
Mean time between failures (MTBF)3126209
Features
ChipsetASMedia - ASM3242
Data transfer rate (max)20
UASP supportYes
Operational conditions
Operating temperature (T-T)0 - 85
Storage temperature (T-T)-25 - 85
Operating relative humidity (H-H)15 - 90
System requirements
Windows operating systems supportedWindows 10,Windows 10 Education,Windows 10 Education x64,Windows 10 Enterprise,Windows 10 Enterprise x64,Windows 10 Home,Windows 10 Home x64,Windows 10 IOT Core,Windows 10 IoT Enterprise,Windows 10 Pro,Windows 10 Pro x64,Windows 10 x64,Windows 8,Windows 8 Enterprise,Windows 8 Enterprise x64,Windows 8 Pro,Windows 8 Pro x64,Windows 8 x64,Windows 8.1,Windows 8.1 Enterprise,Windows 8.1 Enterprise x64,Windows 8.1 Pro,Windows 8.1 Pro x64,Windows 8.1 x64
Mac operating systems supportedMac OS X 10.13 High Sierra,Mac OS X 10.14 Mojave,Mac OS X 10.15 Catalina,Mac OS X 11.0 Big Sur,Mac OS X 13.0 Ventura
Linux operating systems supportedYes
Server operating systems supportedWindows Server 2012 R2,Windows Server 2016,Windows Server 2019
Technical details
Sustainability certificatesCE,RoHS
Weight & dimensions
Width80
Depth51
Height22
Weight37
Packaging data
Mounting brackets includedYes
Quick installation guideYes
Package width142
Package depth170
Package height30
Package weight101
Logistics data
Harmonized System (HS) code84733020
Products per master (outer) case60
Master (outer) case width500
Master (outer) case length380
Master (outer) case height310

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Wed 26th Aug 2026 to Sat 29th Aug 2026
Business Express
£6.95
Business Express

Business Express

Estimated delivery date: Tue 25th Aug 2026 to Thu 27th Aug 2026
View all Delivery Options & International Rates
USB 3.2 Gen 2x2 (20 Gbps) | PCI-Express 3.0 | PCIe x4 Slot | USB Type-C

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

PEXUSB321C is backed by a StarTech.com 2-year warranty and free lifetime 24/5 multi-lingual North American based technical support. StarTech.com has been the IT professionals' choice for over 30 years.

The StarTech.com Advantage

- HIGH PERFORMANCE: Add 1x USB-C SuperSpeed 20Gbps port to your desktop PC with this USB 3.2 Gen 2x2 PCIe Card; Expansion card provides up to 15W (5V @ 3A) to power & charge devices
- FULL USB 3.2 GEN 2X2 SPEEDS: Featuring the ASMedia ASM3242 host controller using x4 lanes of PCIe 3.0, this card is fully capable of speeds up to 20Gbps enabling fast access to high-performance devices like NVMe drives and SSDs
- MAXIMIZED USB PERFORMANCE: USB Type-C PCI Express card supports Multiple INs to reduce bandwidth loss when mix speed devices are connected to a Hub (hub must also support this feature); UASP support improves performance with storage devices
Ports & interfaces
Host interfacePCIe
Output interfaceUSB 3.2 Gen 2 (3.1 Gen 2)
Expansion card standardPCIe 3.0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
Design
InternalYes
Product colourRed
Mean time between failures (MTBF)3126209
Features
ChipsetASMedia - ASM3242
Data transfer rate (max)20
UASP supportYes
Operational conditions
Operating temperature (T-T)0 - 85
Storage temperature (T-T)-25 - 85
Operating relative humidity (H-H)15 - 90
System requirements
Windows operating systems supportedWindows 10,Windows 10 Education,Windows 10 Education x64,Windows 10 Enterprise,Windows 10 Enterprise x64,Windows 10 Home,Windows 10 Home x64,Windows 10 IOT Core,Windows 10 IoT Enterprise,Windows 10 Pro,Windows 10 Pro x64,Windows 10 x64,Windows 8,Windows 8 Enterprise,Windows 8 Enterprise x64,Windows 8 Pro,Windows 8 Pro x64,Windows 8 x64,Windows 8.1,Windows 8.1 Enterprise,Windows 8.1 Enterprise x64,Windows 8.1 Pro,Windows 8.1 Pro x64,Windows 8.1 x64
Mac operating systems supportedMac OS X 10.13 High Sierra,Mac OS X 10.14 Mojave,Mac OS X 10.15 Catalina,Mac OS X 11.0 Big Sur,Mac OS X 13.0 Ventura
Linux operating systems supportedYes
Server operating systems supportedWindows Server 2012 R2,Windows Server 2016,Windows Server 2019
Technical details
Sustainability certificatesCE,RoHS
Weight & dimensions
Width80
Depth51
Height22
Weight37
Packaging data
Mounting brackets includedYes
Quick installation guideYes
Package width142
Package depth170
Package height30
Package weight101
Logistics data
Harmonized System (HS) code84733020
Products per master (outer) case60
Master (outer) case width500
Master (outer) case length380
Master (outer) case height310

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Buykingston order despatch times:

We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.

These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).

We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.

Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.

Despatch times do not apply to UK public holidays.

Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.

Our warehouse reserves the right to upgrade the delivery method you select on your order.

Our available delivery options*

Contact us for a shipping quote.

*All delivery times are estimated unless stated.

Product Returns Note

Buykingston offers a simple, hassle-free returns policy. If for whatever reason you are not happy with the item purchased, you can return it to us within 14 days of receipt for a refund. This applies to items purchased direct through Buykingston only.

Our 14 Day Returns Money Back Guarantee:
For items returned in resaleable condition, with all original packaging. If an item has been opened for inspection but shows signs of use beyond that, a deduction may apply to reflect the reduced value — see our full Terms & Conditions (Section 12) for details.

Some items are excluded from our money-back guarantee unless they have developed a fault. These include:

- Headphones
- Earphones
- Custom made and designed products, such as flash memory products with custom logos on them, e.g. USB flash drives and memory cards with your own logo

Returns FAQs

What is your returns criteria?
14 days from date of receipt, or expected date of receipt on non-tracked items.

How do I go about returning my order?
Please contact us via our contact page with your order number. We will provide you with an RMA number and return instructions, including your return deadline and whether a freepost label applies to your order.

Do I need to contact you before returning my order?
Yes, to obtain an RMA number before sending anything back.

Does my item have to include its original packaging?
Yes, to qualify for our 14 day money-back guarantee. For faulty items, we understand you may no longer have the original packaging.

Who pays for return postage?
If your item is faulty, damaged, or not as described, we cover reasonable return postage, or provide a freepost label where available. If you are returning an item for another reason (including simply changing your mind), you are responsible for return postage unless we have expressly confirmed a freepost label in your RMA email — we recommend using a tracked and insured service for items of significant value.

Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer directly for assistance.

Please ensure you have read and comply in full with Sections 11–13 of our Terms & Conditions.