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Home Networking USB Hubs StarTech.com PEXUSB321C USB 3.2 Gen 2x2 PCIe Card

StarTech.com PEXUSB321C USB 3.2 Gen 2x2 PCIe Card

StarTech.com PEXUSB321C USB 3.2 Gen 2x2 PCIe Card

StarTech.com PEXUSB321C USB 3.2 Gen 2x2 PCIe Card

Brand:

StarTech.com

The StarTech.com PEXUSB321C is a 1-port PCIe USB expansion card that adds a USB-C 20Gbps data port to a compatible desktop PC or server. Using an ASMedia ASM3242 controller and a PCIe 3.0 x4 interface, it is designed for high-speed external SSDs, NVMe storage and other USB-C peripherals. UASP support can improve storage performance, while included full-profile and low-profile brackets simplify deployment across different chassis.

OVERVIEW

The PEXUSB321C adds one high-speed USB-C 20Gbps port to compatible desktops and servers, providing a practical upgrade for external SSDs, NVMe storage and demanding USB peripherals. Compatibility: PCIe x4 or higher slot; Windows, Windows Server, macOS and Linux supported. Model comparison: Unlike basic USB expansion cards, this model uses USB 3.2 Gen 2x2 and UASP for high-performance storage. What to check: The host must provide PCIe Gen 2 or Gen 3 for up to 20Gbps.

USE CASES

External SSD Expansion: Add a high-speed USB-C connection for external solid-state storage.
NVMe Storage Access: Connect compatible high-performance NVMe enclosures.
Desktop Upgrades: Add modern USB-C connectivity to PCs without native 20Gbps USB-C.
Server Connectivity: Expand supported servers with a high-speed external data port.
Large File Transfers: Improve connectivity for workflows involving large data sets.
Media Workstations: Provide faster external storage connectivity for content workflows.
IT Service Systems: Add USB-C connectivity to compatible service and maintenance computers.
Mobile Device Sync: Connect compatible USB-C devices for data synchronization and charging.

KEY FEATURES

USB 3.2 Gen 2x2 at 20Gbps: Provides high-bandwidth connectivity for compatible USB-C storage and peripherals.
One USB-C port: Adds a dedicated modern USB-C connection without replacing the existing motherboard.
PCIe 3.0 x4 interface: Provides sufficient host bandwidth to support the card's 20Gbps USB capability.
UASP support: Helps improve data-transfer efficiency with compatible USB storage devices.
ASMedia ASM3242 controller: Provides a dedicated USB 3.2 Gen 2x2 host controller.
Up to 15W power output: Provides up to 5V/3A for compatible connected USB-C devices.
Full and low-profile brackets: Supports installation in different PC and server chassis formats.
PCIe 2.0 backward compatibility: Provides installation flexibility where a PCIe 2.0 slot is available, although maximum 20Gbps performance requires PCIe Gen 2 or Gen 3.
USB backward compatibility: Works with USB 3.2 Gen 2, USB 3.2 Gen 1 and USB 2.0 devices.
Windows, macOS and Linux support: Gives IT teams broader platform flexibility.
Data-only USB-C port: Clearly defines the card's role for procurement and deployment; it does not provide DisplayPort Alt Mode or USB Power Delivery.
No drivers required: Simplifies installation on supported operating systems.

TECHNICAL SPECIFICATIONS

Brand: StarTech.com
Product ID: PEXUSB321C
Product Type: PCIe USB Expansion Card
USB Standard: USB 3.2 Gen 2x2
Maximum Data Transfer Rate: 20Gbps
USB Ports: 1
External Connector: USB Type-C, 24-pin
USB Port Function: Data only
UASP Support: Yes
Host Interface: PCI Express x4
PCIe Generation: PCIe 3.0
PCIe Backward Compatibility: PCIe 2.0
Required Slot: PCIe x4 or higher, including x8/x16
Chipset: ASMedia ASM3242
USB Power Output: Up to 15W, 5V/3A
DisplayPort Alt Mode: No
USB Power Delivery: No
Thunderbolt Device Support: No
USB 3.2 Gen 2 Compatibility: Yes
USB 3.2 Gen 1 Compatibility: Yes
USB 2.0 Compatibility: Yes
Profile: Standard profile low-profile bracket included
Product Dimensions: 51 × 80 × 22 mm
Operating Temperature: 0°C to 85°C
Storage Temperature: -25°C to 85°C
Operating Humidity: 15% to 90% RH
MTBF: 3,126,209 hours
OS Compatibility: Windows, Windows Server, macOS, Linux

Why Choose This Product?

Adds 20Gbps USB-C: Upgrades older systems with modern high-speed external connectivity.
Built for storage performance: UASP support makes it well suited to compatible SSD and NVMe storage devices.
PCIe x4 architecture: Provides the host interface required for high-speed USB throughput.
Flexible chassis installation: Full-profile and low-profile brackets support different system designs.
Broad operating-system support: Works across Windows, Windows Server, macOS and Linux environments.
15W device power: Can power compatible USB-C peripherals without requiring a separate power connection.
Useful for legacy infrastructure: Extends the service life of compatible PCs and servers without replacing the complete system.
Clear technical limitations: Buyers can avoid compatibility issues by noting that the USB-C port is data-only and does not support video, USB Power Delivery or Thunderbolt devices.

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