i think there's no way to get into 'Computer' so i'll be asking this feature i found while testing another file manager..the way it works is if you have reached the root of a drive, for example C:\ or D:\, if you'll go up(by pressing 'backspace' or any other way to go to the parent folder) there will be a list of the drives from the upper left corner of the panel..i know there's already a drop down list that can be displayed if one chooses to but not everyone wants to have something between the tab and the address bar..there are some minimalists who just wants a single line toolbar, tabs and address bar..and besides the list i'm saying is not a drop down, but literally a list that pops in the corner only when you've reached the root and still pressed 'backspace'..it is really like an alternative of 'Computer'..
Btw, the FM i'm saying is Just Manager..still in Alpha stage