They did print a bit large in PLA (was worried about breaking the port), but I printed them in TPU and they squeezed into place perfectly! Note: I used these in the P1/X1 4-in-1 adapter, which seems to be largely identical to the A1 hub.
Nice! For those who wish to print regular version - scale down whole plate by 1 mm. First time I printed covers didn't want to enter at all, but in second try and scaling down by that 1 mm everything was awesome