USB vs Thunderbolt for one.... for displays the 4k output is limited to 30hz on your adapter too... no ethernet on yours.... limited to 60w charging, and it's pass through not its own psu...Why would I need this for my 2023 M2 Mac Mini?
Right now I’m using this for $37.99 at BB and it works great:
j5create USB C Multi Port Hub with Power Delivery White JCD373 - Best Buy
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Nothing wrong with yours if it works for you, but it's nowhere near the same thing...