There is no such thing as a male socket, since "socket" is specifically used to describe what something goes into rather than what goes in. If you're talking about electrical cables, the socket is what sits on the wall and has holes in it, whilst the plug is the bit on the end of the cable that has pins which are inserted into the socket on the wall.
Oh, and the pins are called pins, so in the UK you would talk about a three-pin plug and everyone would know exactly what you meant.
You are obviously writing about electrics! Around the world, most sockets are female (usually found on internal walls near ground level) and plugs (usually on electrical appliances) are male. (But the latter are called plugs, not male sockets.) But you can have both male and female sockets, often found on extension cables, and frequently found on connectors linking peripherals to computors, for example. A further confusion comes because "plug" is both a noun and a verb. So, for example, on an extension cable, you would plug the male and female sockets together. I hope this helps but I'm sure there are others with better electrical knowledge.
It is a specific item that is "transgender" - often such connectors that have male on each end or female on each end are called "gender changers" - because they can change a plug into a socket or vice versa.
I have looked at your link and can see your problem. These products look similar to what I've mentioned about extension cables having male and female sockets, so I would refer to them in the same manner.
Whatever you're inserting is likely to be the plug and whatever you're inserting it into is likely to be the socket. If there is any confusion, or if the connection is made in a different manner, you're better off calling it a connector (male connector with pins, female connector with holes).