I'm not trans. I'm Type-C.

Male or female end?

I have USB-C too

USB-C is still a specific standard with male and female end, It's just rotation independent. So being like USB-C is more like not minding if you're top or bottom

Being trans would be if you had a connector that changes from M to F or F to M. Not sure if any connection currently fits this description hmm

Can insert it both ways up?

@Hazarth I think USB-C is more like having 4 testicles on one end and 2 clitorises on the other.

The closest thing to full reversibility I can think of is the IDSS docking on the space station, which have 3-fold rotational symmetry but are also fully "androgynous" in the sense that both sides are identical and have male and female parts. So theoretically anything can dock to anything if it has an IDSS port.