I'm finally getting my first Steam Deck with the 512 OLED. What accessories would you consider imperative?
Some things that are of interest to me are...
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About the dock, I would add that if you want to do emulation stuff, a dock with kb/mouse makes it a lot easier. Can you do it with the trackpad and on screen keyboard, yes. Will you hate yourself for trying after 5 minutes, also yes. 😂 Maybe it was just me, I found doing anything other than basic settings changes nearly impossible without kb/mouse.
If possible, I'd like to install some kind of Remote Desktop app on the deck so I can just do all that stuff from a window on my primary computer.
If it's just file management (which for emulators, it is) I would just use FileZilla. It's a basically GUI for SSH but I like it.
Steam Link works really well to remote into desktop mode. You just need to install the Steam Link client on your PC or phone.