JSAUX RGB Docking Station for Steam Deck (OLED)/ROG Ally/Legion Go, 12-in-1 Handheld Dock with 4K@120Hz HDMI & DisplayPort Gigabit Ethernet USB C 3.2 USB A 3.2/2.0, SD/TF Slots 3.5mm Jack-HB1201S

Right now I’m using a JSAUX RGB dock. It’s sending one signal out on the DisplayPort and the other on HDMI. Here is the Amazon link for this one: https://www.amazon.com/JSAUX-Handheld-DisplayPort-Ethernet-Jack-HB1201S/dp/B0DWSDVBCF/ref=sr_1_3?crid=WUOX1RMNLTNN&dib=eyJ2IjoiMSJ9.f974vSykmqJDJfLRkFsHL_d3wCKhcmQ3qBfHnKPY9CDOzUjs2Zz3YbqMEpdgf1Z5.v3P9_kvhz5GsEUqV_uRkwaXSpX1M8IxRhV7FYEePQFQ&dib_tag=se&keywords=jsaux%2Brgb%2Bport&qid=1782527621&sprefix=jasux%2Brgb%2Bpo%2Caps%2C537&sr=8-3&th=1