FTDI SuperSpeed-FIFO Bridge with a warning: how to fix it

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In Device Manager on your second PC, FTDI SuperSpeed-FIFO Bridge under Other devices with a yellow triangle means the card's data port is plugged in, but the data driver isn't installed. Your software can't use the card until it is. It's a one-button fix.

Device Manager on the second computer: with the driver in, FTDI FT601 USB 3.0 Bridge Device shows under Universal Serial Bus controllers. Without it, FTDI SuperSpeed-FIFO Bridge shows with a warning under Other devices

How to fix it

Right-click MewTools and choose Run as administrator, or the driver buttons won't work
Open Drivers & Flashing and press Install DATA Driver (FTDI FTD3XX)
Restart the second PC
Open Device Manager again. It should now say FTDI FT601 USB 3.0 Bridge Device under Universal Serial Bus controllers, with no warning

Use the button in MewTools, not a driver from a download site. If MewTools won't open, see MewTools blocked by Windows.

Good to know

Device Manager shows the same name even when the link runs at USB 2 speed, so a clean entry doesn't mean the speed is right. The MewTools speed test tells you that. What Device Manager shows has every state. Other errors are in DMA error messages.

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