EXSYS EX-12004-2 PCI Express x4 to 2x USB 3.2 Gen 2 Type-A + 1 Internal USB 3.2 Gen 2 Type-A Adapter Card

When your desktop lacks high-speed USB ports, transferring large files or connecting modern peripherals becomes a bottleneck. The EXSYS EX-12004-2 expansion card solves this by adding two external USB 3.2 Gen 2 Type-A ports and one internal USB 3.2 Gen 2 Type-A port through a PCI Express x4 slot. With data transfer rates up to 10 Gbit/s, you can move massive video files, back up drives, or connect high-performance devices without waiting. The ASMedia ASM3142 chipset ensures reliable, efficient performance, while the included low-profile bracket makes it compatible with slim desktops and servers.

Who is it for

This card is ideal for PC builders, IT professionals, and content creators who need fast, reliable USB connectivity. If your system lacks USB 3.2 Gen 2 ports or you need additional internal USB connectivity for front-panel hubs or other devices, this adapter provides a simple upgrade. It works with Windows, Linux, and macOS, making it versatile for mixed environments.

Main features

• Adds two external USB 3.2 Gen 2 Type-A ports (10 Gbit/s each) and one internal USB 3.2 Gen 2 Type-A port
• PCI Express x4 interface for high bandwidth; compatible with x4, x8, and x16 slots
• ASMedia ASM3142 chipset for stable performance and low power consumption
• Includes both standard and low-profile brackets for flexible installation
• Backward compatible with USB 3.0, USB 2.0, and USB 1.1 devices
• SATA power connector provides up to 5V/0.9A per port for bus-powered devices
• Supports UASP for faster data transfers with compatible storage devices

Specifications

• Host Interface: PCI Express x4
• Output Interface: USB 3.2 Gen 2
• External Ports: 2x USB 3.2 Gen 2 Type-A
• Internal Ports: 1x USB 3.2 Gen 2 Type-A
• Data Transfer Rate: 10 Gbit/s
• Chipset: ASMedia ASM3142
• Power Connector: SATA Power
• Max Power Output per Port: 5V / 0.9A
• Operating Systems: Windows 7/8/8.1/10/11 (32/64-bit), Linux Kernel 2.6.31+, macOS 10.8+
• Certifications: CE, FCC, RoHS
• Low Profile Support: Yes (includes low profile bracket)
• Backward Compatibility: USB 3.0, USB 2.0, USB 1.1
• UASP Support: Yes

Tips

For best performance, install the card in a PCIe x4 or larger slot and connect the SATA power cable to ensure full power delivery to connected devices. If using a low-profile case, swap the standard bracket with the included low-profile bracket before installation. No drivers are needed for Windows 8.1 and later, but for Windows 7, download the latest driver from the ASMedia website.