The Asus Z790 TUF with Akasa PCIe USB card may not work due to compatibility issues.
The Asus Z790 TUF with Akasa PCIe USB card may not work due to compatibility issues.
You're facing issues with the PCIe USB extension card not recognizing properly on your Windows system. The BIOS indicates X2 speed, but the card only shows X16. The SATA connector is functional and connected. You've tried relocating slots, updated drivers from ASUS, and confirmed the BIOS is current. Despite these steps, Akasa drivers aren't detected in Device Manager. It might be missing a specific driver or compatibility issue. Consider checking for firmware updates for your motherboard, verifying the exact model of your PC, or reaching out to Akasa support for further assistance.
It's an X2 card, which is what you'd expect. When you connect devices, Windows probably will install the necessary drivers automatically since there aren't many different USB chips available.
On a PC with Z790, the USB devices aren't showing up even though the extension card is connected and the motherboard ports function properly. On another system with an older Ryzen 2700x, the detection works correctly.
It seems unusual. Is the PCIe port on those boards part of the chipset or the CPU? It might be sharing with the main x16 slot, which could cause issues if it doesn't properly downgrade to x8 for a x2 card that's not very common. Just a guess. One possibility is creating a Linux USB stick and booting into it. That would let you check lspci and lsusb to confirm detection and connected devices.
I believe those are the USB3.2 Gen1 Hub Controller on the motherboard, and my ASUS B660-PLUS WIFI D4 matches them. It seems an add-on card would appear separately in lspci as its own USB controller.
It appears the issue isn't resolving. You might check the dmesg logs on Linux for any entries, though it probably won't give much insight into why it's failing—just to confirm detection.