STARTECH.COM PEXUSB312A3
USB Adapter - PCI Express 3.0 x4 - Plug-in Card - Black - UASP Support - 2
Key facts
- Part number
- PEXUSB312A3
- Brand
- STARTECH.COM
- Category
- Adapters
- Price
- AUD 79.19≈ USD 55.28 RRP
- Availability
- On request — ask for a quote
The STARTECH.COM PEXUSB312A3 is an adapter listed in the Prology Parts Index. RRP AUD 79.19≈ USD 55.28 (Oct 2026). Request a quote for volume pricing, or sell us your used adapters.
Overview
This PCIe USB 3.2 Gen 2 controller card installs into an available PCI-Express x4 slot in your computer and enables you to upgrade your current system by adding two SuperSpeed USB-A (10Gbps) ports.
Add two 10 Gbps USB Type-A Ports to Your Desktop Computer
The controller card enables you to connect two USB-A Gen 2 (10 Gbps) devices to your desktop computer. The USB-A ports are ideal for connecting USB devices such as external hard drives and solid state drives or powering and syncing your mobile devices. The USB-A ports provides up to 4.5W (5V/0.9A) of power per USB port, and are backward compatible with USB 3.2 Gen 1 (5 Gbps), and USB 2.0 (480 Mbsp) 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 2 (10 Gbps) Performance
The USB 3.2 Gen 2 card features an ASMedia ASM3142 host controller that utilizes x2 lanes of the PCIe 3.0 bus, making the card capable of speeds up to 10Gbps on each port, 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, even when 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
- With 2 USB ports, connect/disconnect devices while not having to shut down the system
Specifications
General
- UASP Support
- Yes
- Host Interface
- PCI Express 3.0 x4
Mac OS X 13.0 Ventura
- Total Number of USB Ports
- 2
- Number of USB 3.1 Ports
- 2
- Platform Supported
- Mac
Linux
- Product Type
- USB Adapter
Manufacturer Website Address
- Product Name
- USB 3.1 Card
- Weight (Approximate)
- 79.4 g
- Form Factor
- Plug-in Card
- Length
- 109.2 mm
- Height
- 17.8 mm
- Width
- 119.4 mm
- Product Color
- Black
Price history
- Latest
- AUD 79.19≈ USD 55.28
- Oct 2026
- Lowest recorded
- AUD 79.19≈ USD 55.28
- Highest recorded
- AUD 79.19≈ USD 55.28
- Recorded
- 2026
- 1 price point
AUD 79.19 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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