i have "reinston" dock that is more less noname usb-c to 2 x USB, 2 x USB-c and sd/tf card reader + ofc HDMI plug. So I'm kinda just plugging everything in and surprise it works.

My dock is more less a "no name" picked in store to try it out.

Also it has option to stream games rendered from your PC so you can play titles like CP2077 on steam deck rendered from your desktop if you feels so.