The APC AP9600 Smartslot Expansion Chassis allows you to use APC management cards with APC UPSes that have an advanced computer interface port but do not have a card slot. You can also use the chassis with UPSes that have a card slot for using additional management cards.
Along with a card slot, cable marked UPS, a UPS monitoring port, and a power connector (for optional power adaptor), the Smartslot Expansion Chassis includes a status LED that provides installation and power indications.