Some versions use the FL2000DX chip. If the SMI drivers don't work, the Fresco Logic USB 3.0 Display ID is the next likely candidate.
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Shut down your PC and double-check that the internal 15-pin SATA or 4-pin Molex power cable is firmly seated into the back of the card. Relying solely on PCIe slot power can cause drops under heavy loads. 3. "Device Descriptors Request Failed" (Error Code 43) Some versions use the FL2000DX chip
: 2x External USB 3.0 ports and 1x Internal 19-pin header (for front panel USB 3.0). This link or copies made by others cannot be deleted
: Typically requires a SATA or 4-pin Molex power connection from your PSU to ensure stable power to all ports.