no button dvd slot, but has optical drive in specs

Can you open it via software, try double clicking the drive icon and see if it pops open or you can right click the drive icon and select "eject".

If there is a small hole in the door you can straighten a paperclip, push it in the hole until the tray slides out.
 
That is extremely odd. If there is a drive there should be a button or the ability to push it and get it to open. Unless it isn't a drive but a place where a drive could be.
 


What says it has a DVD drive?

Open File Explorer
This PC
Do you see the DVD drive in there?
 
Actually there is no other drive except the OS and there is no eject if I right click it. One more thing, beside the DVD slot there is this small rectangular hole, and when I pushed a straighten clip, nothing happens.