NOTE: Single PCIe mezzanine card operation is not supported.Supported I/O ModulesThe enclosure supports a switch or a pass-through module. The maximum Ethernet pass-through for a pass-throughmodule is eight lanes. A switch module can accept upto 16 lanes from Fabric A and output up to eight lanes to theexternal ports.The following I/O modules are supported by the enclosure:• Dell PowerEdge VRTX 1Gb R1-PT pass-through module• Dell PowerEdge VRTX 1Gb R1-2401 switch moduleNOTE: For more information on the I/O modules, see the I/O module's documentation at dell.com/poweredgemanuals.Configuring Network Settings For The I/O ModuleYou can specify the network settings for the interface used to manage the I/O module.Before configuring the network settings for the I/O module, make sure the I/O module is turned on.To configure the network setting, you must have Administrator privileges for Fabric A to configure the I/O module inGroup A.You can configure the network settings using the following:• CMC web interface• RACADMFor more information on configuring the network settings, see theDell Chassis Management Controller for DellPowerEdge VRTX User’s Guide at dell.com/esmmanuals.Mapping PCIe Expansion SlotsThe enclosure has two PCIe switches integrated on the system board which map the Shared PERC storage slots andPCIe expansion slots to the PCIe mezzanine cards on the server modules.NOTE: Before mapping or unmapping a PCIe device, the server module must be turned off.NOTE: The PCIe switch mapping is controlled by the firmware and depends on the software license installed on thesystem:• With base licensing, each server module can be mapped to a maximum of two PCIe slots.• With the advanced licensing, a server module can map all available PCIe slots.• Default factory configuration has all PCIe slots unmapped.For more information on PCIe slot configuration licensing, see theDell Chassis Management Controller for DellPowerEdge VRTX User’s Guide at dell.com/esmmanuals.The switches map the mezzanine cards to the PCIe slots on the enclosure's system board. There are five PCIe lowprofile slots on the system board and three full-height, full-length PCIe slots on the PCIe riser. All the PCIe slots can bemapped to the PCIe mezzanine cards on the server modules to provide I/O expansion for the system:PCIe mezzanine Fabric B and Fabric C cards on each server module are mapped to the PCIe switches which further mapto the PCIe slots and the Shared PERC slots on the enclosure's system board.30