Review on 💻 FebSmart 2 Ports USB 3.0 PCIe Expansion Card for Windows Server, XP, Vista, 7, 8, 8.1, 10 PCs - Super Fast 5Gbps Data Transfer - Built-in Self-Powered Technology - No Additional Power Supply Required (FS-U2-Pro) by David Dober

I connected the FS-U2-Pro to an older HP ProLiant MicroServer N40L (circa 2013) that only had USB2 ports and had Windows 2012 R2 installed. After attaching the low-profile bracket, the card fitted perfectly into the tight space and immediately started working without the need to install drivers. Backup to external USB3 storage is now much faster than before. Some additional notes:* The POST/BIOS screen does not recognize any storage devices attached to this card. It is not possible to boot from there (e.g. from a flash drive with an operating system installer). I suspect this applies to all PCIe based USB3 solutions. * It is defined by Windows as "Renesas USB 3.0 Extensible Host Controller". * It has a USB3 controller shared by two ports. Don't expect full I/O speed on both ports at the same time - you're limited to that one channel. Most of these cards have the same configuration, so there is no point in buying a card with more ports*. The two ports are fully PCIe powered and do not require any additional power supply. This is hardly true for a card with many ports.