STARTECH.COM ADVANTAGE: IT professionals’ choice for over 30 years; This USB-A PCIe add-on card is backed for life by StarTech.com, including free 24/5 North America based multi-lingual tech support MAXIMIZED USB PERFORMANCE: Multiple INs support for max bandwidth when using mixed-speed devices; USB Attached SCSI Protocol (UASP) for storage device, like SSDs, HDDs, NVMe drives and thumb drives POWER: USB PCI Express expansion card with SATA power header has the option to provide supplemental power to the USB ports (if motherboard power is insufficient) providing up to 4.5W (5V@0.9A) per USB-A port COMPATIBILITY: USB PCIe adapter card for desktop PC installs in standard profile PCI-e 2.0 x4 slot; Supports Windows/Linux/macOS with auto driver install on Windows 8 & up; Works w/USB 3.0/2.0 devices HIGH PERFORMANCE: USB PCIe card with 4x USB-A ports up to SuperSpeed 10Gbps per port; Dual ASM3142 controllers with up to 20Gbps total bandwidth across 4 ports; USB 3.1 Gen 2/USB 3.2 Gen 2×1; Upgraded version of our popular USB card PEXUSB314A2V.