Learn English – How to say that morning is yet to come

In this case I would not use to but there's more to it than that.

When you say come it implies that you're referring to the place you are in. And when you say there it implies that you're referring to somewhere else than where you are.

So neither is really correct but if you switch out come with go, or there with here, it will change, for example.

Are you going to come here?

Which means, are you going to come to the place I am in currently?

Are you going to go there?

Which means, are you going to go to the place where I am not at currently?

But to answer your original question I would not use to.

Both are possible, although the former would normally employ a hyphen.

When used as an adjective, 2-byte refers to size of something:

The computer's memory is organized into 2-byte words.
The token is stored as a 2-byte variable.
This will need to be stored as a 2-byte character.

When used as a plural noun, the 2 is simply a quantifier. However, in this case, you might see the word spelled out (as is often the case with numerals less than 10):

Each word in memory can be broken into two bytes.
The token is stored as a variable which takes up two bytes.
We will need to store this character in two bytes; it won't fit in one.