They are both for apple macs , vga and dvi cable converters so you can use an external monitor xD
The circular one is vga and the boxed one is dvi. (quote from Mr Marzbarz)
Both brand new only opened to take the picture and 100% genuine.
Dont really know about price but put at £15 and see what offers I get.
I will split if you only want one.
Priced reduced to £12.50 each
For Macbook Air