PCI Express Upstream Switch Port Code 10

I'm using an Alienware Area 51 desktop, which has two Thunderbolt 4 ports. I have a device connected to each port:

• Thunderbolt Port 1: Anker Prime 14-in-1 Thunderbolt 5/4 Docking Station

  • PCI\VEN_8086&DEV_15EF&SUBSYS_00008086&REV_06

• Thunderbolt Port 2: Blackmagic eGPU 580

  • PCI\VEN_8086&DEV_5786&SUBSYS_11112222&REV_84

When I connect these devices, Device Manager shows a "PCI Express Upstream Switch Port" error (Code 10) for both. One of the devices appears to be functioning, but I can't confirm whether it's operating at full capability. The other device doesn't seem to work at all — for instance, when I plug a USB drive into its ports, the system doesn't detect it.

Regarding the eGPU: I don't actually use it for graphics processing, since my desktop has a more powerful internal GPU. I mainly use the eGPU for the additional USB ports on the back.