StarTech.com PEXUSB311AC3 - 2Port USB-A USB-C USB 3.1 PCI Express Ad
Features
This USB 3.1 Gen 2 card lets you add one USB-C™ port and one USB-A port to your computer, through a PCI Express slot. It enables you to upgrade your current system by adding two USB 3.1 Gen 2 ports to your computer and giving you access to data transfer speeds up to 10Gbps per port. USB 3.1 Gen 2 (also known as USB 3.2 Gen 2x1) PCIe Add-On card supports Multiple INs, maintains optimal bandwidth even when mixed speed devices are connected.
Plus, by adding one USB-C and one USB-A port to your PC, you can easily connect legacy, modern, and future USB devices, regardless of the USB connector type.
USB 3.1 Gen 2 Performance
By adding 10Gbps USB ports to your computer, you can harness the speed of USB 3.1 Gen 2 and rest assured you're ready for both current and future high-bandwidth USB-A and USB-C devices. With higher data throughput support, this USB 3.1 PCIe card is a necessity for external drives, drive enclosures, and many other USB 3.1 peripherals. Plus, the expansion card with SATA power enables supplemental power to the USB ports (when motherboard power is insufficient) providing up to 5V 3A/15W via the USB-C port and 5V 0.9A/4.5W via the USB-A port. The card is ideal for use with high performance external storage solutions.
Compatible with Older USB Devices
Connecting older peripherals isn't a problem. This versatile dual-port USB 3.1 card is backward compatible with legacy USB 3.0/2.0 devices that use the common USB Type-A port, so you can eliminate the added expense and aggravation of purchasing new devices. You can also connect older devices on the USB Type-C™ port using a variety of USB-C cables and adapters.
Easy Installation
The USB 3.1 card is compatible with a broad range of Windows®, macOS and Linux® operating systems. Plus, the high-quality card includes both standard-profile and low-profile brackets, making it easy to install in full or small form-factor PCs and servers.
Faster Transfer Speeds with UASP
The card supports USB data transfer speeds of 10Gbps. But, you can experience transfer speeds up to 70% faster than conventional USB, when connected to a computer that also supports UASP. With UASP you can utilize the full potential of a SATA III SSD or HDD. UASP is supported in Windows® 8, macOS (10.8 or above), and Linux®. In testing, UASP performs with a 70% faster read speed and 40% faster write speed over traditional USB 3.1 Gen 2 at peak performance. At the same peak in testing, UASP also shows an 80% reduction in required processor resources.
Specifications
Technical Specifications
| Connector(s) | 1 - Connector Type(s)PCI Express x41 - Internal PortsSATA Power (15 pin)1 - External PortsUSB Type-C (24 pin) USB 3.1 (10Gbps)USB 3.1 USB Type-A (9 pin, Gen 2, 10 Gbps) |
|---|---|
| Environmental | Operating Temperature5°C to 50°C (41°F to 122°F)Storage Temperature-20°C to 85°C (-4°F to 185°F)Humidity20~80% RH |
| Hardware | Ports - 2Interface - PCI Express x4 |
| Bus Type | PCI Express |
| Card Type | Standard Profile (LP bracket incl.)Industry StandardsUSB 3.2 SpecificationsPCI Express Base 3.0 SpecificationsIntel xHCI Specification Rev. 1.1 |
| Chipset ID | ASMedia - ASM3142 |
| Packaging Information | Package Height - 1.2 in [30.0 mm]Package Length - 5.6 in [14.2 cm]Shipping (Package) Weight - 4.3 oz [123.0 g]Package Width - 6.7 in [17.0 cm] |
| Performance | Maximum Data Transfer Rate - 10GbpsUASP Support -YesType and Rate - USB 3.2 Gen 2 - 10 Gbit/sMTBF - 2,684,396 Hours |
| Physical Characteristics | Color - RedProduct Height - 0.7 in [19.0 mm]Product Length - 4.7 in [12.0 cm]Weight of Product - 1.7 oz [48.0 g]Product Width - 3.2 in [81.0 mm]Material - Steel |
| Software | OS CompatibilityWindows® 7, 8, 8.1, 10 Windows Server® 2008 R2, 2012, 2016, 2019 Linux® 3.5 to 4.11.x macOS 11.0, 10.15, 10.14, 10.13Microsoft WHQL Certified |
| Special Notes / Requirements | System and Cable RequirementsPCI Express enabled computer or server with a PCI Express x4 slot or higher (x8, x16)Optional SATA power connectorThe maximum throughput of this card is limited by the bus interfaceThe card's USB-C port is a standard data throughput port. It does not support DP Alt Mode or USB Power Delivery |
| What's in the Box | USB 3.1 CardFull Profile Bracket (Installed)Low Profile BracketQuick-Start Guide |
| Brand | StarTech.com |
|---|---|
| Product Type | PC Parts > IO, SCSI, IDE Cards |
| Weight | 0.045 kg |
| Warranty |
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Note:
Warranty period is as stated above unless the manufacturer has chosen to specify a longer period.
All warranties are return to base unless otherwise specified.
Shipping Information
- Free NZ-wide shipping on orders over $299
- Standard delivery 2–5 business days
- Rural delivery may take an additional 1–2 days
- Same-day dispatch for orders placed before 2pm (weekdays)
Returns Policy
- 7-day returns on unused items in original packaging
- Faulty or damaged products covered under warranty
- Contact our support team to initiate a return








