How to connect to windows 8.1

[Play]

Hello to everyone here. I just acquired a MK80 loaded with adroid 4.41 OS , I wanted to connect it to the PC to access all files form the OS just like using es explorer and be able to delete folder if I need to.
I connected the unit via USB port to the PC turn it on and windows did not recognized it.
I was looking into downloading ES Explorer but that also did not work.
Is there a software that I can access the MK80 and browse the files inside. ?

Thank you to all in advance for the time.