Product descriptionwhen adding the cp 7914 expansion module a replacement footstand and an additional power supply are required if one cp 7914 is being added a cp singlfootstand and a single power supply 3rd pwr cube or cp pwr cube is needed if two cp 7914s are being added a cp doublfootstand and two power supplies are needed the only tool required for installation of the cisco 7914 is a flat blade screwdriver or other appropriate tool to unlatch the pins securing the standard footstand