Like many of you, for this device to be really usable as a general, day-to-day computing device [for the wife], I need it to drive an external display, resolution independent, as an extended desktop.
Just for another option (in addition to what
@sparksd posted), confirmed operational with my 12.9 iPP.
RREAKA Upgraded USB C to 4K HDMI Adapter for Nintendo Switch/Switch OLED, Portable Switch Dock Station Replacement with PD Charger/USB 3.0 Port,Travel Multiport AV Converter Adaptor for Switch
www.amazon.com
Provides a USB-C charging port in, HDMI out (tested but not in use), 2 USB-A ports (2.0/3.1) out, one being used to drive an external DAC. It's even pretty nicely designed, aluminum construction, I got it during a coupon offer, it was like $21.
Kind of a side perk, but the reason I chose this one specifically: it also functions as a TV out for a Nintendo Switch. You just have to supply the right amount of power (i.e., the OEM Switch charger, or I'm thinking any 60w PD charger, will buy of those soon ...)
[automerge]1589209562[/automerge]
I meant to add, she's already got a decent large display being used with a MBP, external magic KB/TP (also tested, and works great with the recent iPadOS update), our printer (on that rare occasion) supports iOS, and she was just saying how much she prefers the iPad when she wants to go "full mobile" (i.e., use it on the deck while drinking wine ...
)