Windows 11 not detecting OCuLink eGPU on LattePanda Sigma 

Help needed: Windows 11 not detecting OCuLink eGPU on LattePanda Sigma 

Hello, I'm trying to set up an eGPU via OCuLink on my LattePanda Sigma, but the system isn't detecting it. 
I would really appreciate some guidance on BIOS tweaks or troubleshooting! 

Here is my hardware setup: 
Board: LattePanda Sigma i5 (32GB RAM) 
OS: Windows 11 Pro 
eGPU: Aoostar AG02 
GPU: NVIDIA GeForce RTX 5060 Ti 
OCuLink Adapter: BQ-FM040-200 Ver:2.0 (OCuLink SFF-8612)
Slot used: Main M.2 NVMe PCIe 4.0 slot 

The Issue: When I connect the eGPU via Thunderbolt, it works flawlessly (which confirms that the RTX 5060 Ti, PSU, and dock are fully functional). However, when I switch to the OCuLink connection via the M.2 adapter, the GPU does not show up in Windows Device Manager at all.