Blender uses Alt+A.
It consistently uses Alt as a modifier to execute inverse operations. I to insert a keyframe, Alt+I to delete it. Ctrl+F to set a text filter/search, Alt+F to clear it. Ctrl+P to set parent, Alt+P to clear it. H to hide selected objects, Shift+H to hide unselected objects, Alt+H to unhide all. {G,R,S} to move/rotate/scale, Alt+{G,R,S} to reset transformations. It’s not exactly industry standard, but internally consistent that makes learning it easy.
Ctrl+D to deselect is stupid.
If you really, really, really don’t want to buy a keyboard and monitor, you can buy a USB KVM console, but it’ll likely cost more. Something like this: https://www.startech.com/en-us/server-management/notecons01