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I found nowhere else to go for help, my question is about old ASUS B85M-E R2.0 capacities

Level 7

I'm trying to add an ASMedia eXtensible USB 3.1 Host Controller. The mobo has an accessible PCIex16 slot. I'm running Windows 10 Pro 64-bit 22H2 19045.3324. The controller card's driver installation dvd ran without any errors. The Device Manager shows three new items under Universal Serial Bus Controllers:

ASMedia XHCL 1.1, Generic Super Speed USB Hub, and Intel(R) USB 3.0 eXtensible Host Controller

all of them report as working properly

I'm trying to connect a DeepSpar USB Stabilizer device via a USB-C cable.

I downloaded the installer for it (DeepSparUSB10G.exe).

When I run it, its Control Panel reports this:

ERROR: USB Unit is not found.
HINT: Generic Microsoft USB3 controller driver was detected. For optimal performance we recommend installing the driver released by the manufacturer of your USB3 controller (if available).
HINT: We recommend disabling Speed Optimization for unstable drives.

As you can see, the DeepSpar unit is not found. It does report detecting a Generic Microsoft USB3 controller driver.

It doesn't seem to detect the ASMedia
Controller. Maybe the generic one it is finding is one of the two usb3 original ports, one of which I connected to an adapter with multiple usb3 ports for more usb3 ports.

My apprehension is that my second PCIEx16 slot is not usable when I'm already using the first one for my video card (a Radeon RX 590 Fatboy).

The manual is not clear on that. There's an image, but no explanation or description or instructions.

OK, so if I can't use my old, but trusty Asus built PC, I have a couple of options. I can either buy a relatively cheap PC with existing USB-C (3.1) Gen 2, 10Gbp data transfer speed. I'm not looking for a gaming computer. I just need that because the DeepSpar unit requires it.

Or, I can build a new one on a mobo with what I need already built in.

I'd appreciate some suggestions from anyone who has a solid Asus mobo experience & knowledge (going back to the no longer supported B85M-E).