Background color - you can manually set the color of images background and color on hover.
Style - you got 18 hover effect variants: from 0 border radius (square) to 50% border radius (round) and backwards, with 360deg rotation or without it
Links target - open links in a new tab or the same one
Load JQuery - you can choose whether to load or not JQuery (10.2.min)
20 logos - you can set up to 20 images and give them 20 corresponding names which will show up on hover. Besides the image name will become it's alt and title attributes.