iDRAC features are available based on the purchased license (Basic Management, iDRAC Express, or iDRAC Enterprise). Only licensed features are available in the interfaces that allow you to configure or use iDRAC. For example, iDRAC Web interface, RACADM, WS-MAN, OpenManage Server Administrator, and so on. Some features, such as dedicated NIC or vFlash requires iDRAC ports card. This is optional on 200-500 series servers.
iDRAC license management and firmware update functionality is available through iDRAC Web interface and RACADM.