Accessories and Documentation
Inside of the hardware box, you are given a socket and 15 standoffs, eight long fan screws, and the four screws needed to mount the 915R to the 925. There are 18 screws for the motherboard and ODD mounting, four PSU screws, four 3.5" drive screws, and four 2.5" drive screws.
The bottom has two screws for Kensington locks, and a handful of screws to mount drives into the slide out trays through the bottom for 2.5" drives.
More of that kit includes the ten zip ties, four rubber grommets to slide in a storage drive, the pair of Kensington lock loops, and a bag of motherboard screws for the 915R. At the bottom is an I/O dust cover to plug the hole in the back of the 915R, if there isn't a system installed.
The last bits of the kit include a PSU cover plate for the 915R, and a bundled up SATA power extension, to allow you to power the drives in the 195R with the cables from the PSU at the bottom of the 925.