The input/output connectors that are available to the blade server are supplied by the BladeCenter® unit.
See the documentation that comes with the BladeCenter unit for information about the input/output connectors.
The blade server has a media-tray select button on the control panel. See Blade server control panel buttons and LEDs for information about this button and its function.
The Ethernet controllers on the blade server communicate with the network through the Ethernet-compatible I/O modules on the BladeCenter unit. Network signals to and from the blade server or any expansion cards are automatically routed to a same-network-interface I/O module through circuitry in the BladeCenter unit.