USB Ports not working - MacBook ir M2 & Del D6000

[aptdeltoid]

Hi all,

Hoping to please get some advice.
I bought a refurbished Dell D6000 off Amazon, it seems to be working great, aside from the USB-A ports not working, or either audio jacks. The USB-C port work without issue

My current setup:
MacBook Air M2...
Dell D6000 ---> plugged in via thunderbolt, to MacBook
Main monitor --> plugged in via HDMI cable
Secondary monitor --> plugged in via HDMI cable to DP adapter into D6000

I've had a comb through this thread already, but haven't had any luck from old suggestions.

Any help would be greatly appreciated! This device is so close to being perfect.

Thanks