https://www.amazon.com/AUKEY-Adapter-Ethernet-MacBookPro-Thunderbolt/dp/B0841T9KC9 I use this one and it works for my quad hd ultrawide at 3440x1440. Works great, I got a usb c extension cable so I can hide the hub

I bought this Aukey 12 in 1 hub for travel for my main Chromebook, but so far has worked flawlessly on the duet. It drives 2 extended screens with an Acer 14 chrome book for work with an I5 and 8 GB of ram. https://www.amazon.com/dp/B0841T9KC9/ref=cm_sw_r_cp_apa_i_glmKFbM10DRHN