In the original, there are four book shelves that can be moved by switching the button. The stairs lead to another row of books and a door to the Main hall 3F. The books are filled with various content of chemistry and company data files on Umbrella. The door below the staircase at the far ends leads to the Main Hall 2F.
The four book shelves at the front are unable to be moved because the power is off. The power switch is located to the right in an enclosed area. It can be reached via the upper walkway by heading towards the dead end until reaching a section that will break, causing Leon or Claire to fall down. Inside that small area, there's a bronze plate with a picture of a warrior with it. There's a puzzle in this room where the four book shelves need to be moved according to the pattern on the plate. Switch the book shelf at the far left to the right and do the same with the book shelf next to it to open the bronze plate shutter, revealing a Bishop Plug for Leon and the Serpent Stone for Claire.