The bretford powersync cart for ipad stores charges syncs and transports up to 30 ipad devices at a time the powersync cart for ipad will allow you to bring your ipad set up to 30 devices to any room in your building and keep your content in sync with itunes this design features a 30 device power system designed for ipad providing full 21 a dc charging power to all ipad devices and when connected to your mac for syncing the powersync cart for ipad automatically switches over to