Dell PowerEdge M420 Technical Manual page 23

The Dell PowerEdge M420 offers balanced, scalable I/O capabilities, including one integrated PCIe
3.0 capable mezzanine card slot.
With M420, the job of deploying, updating, and monitoring is fast and easy. System management
integration features include the following:
Pre-boot: Use the Dell Lifecycle Controller graphical user interface (GUI) to set configuration
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such as bandwidth allocation or firmware revision level.
 Post-boot: Agent-free out-of-band or high-speed in-band connection over LOM through the
Operating System/BMC pass-through feature for sensory information.
Automation of firmware and driver version deployment upon component replacement.
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 Automatic monitoring of NIC status and notification on SNMP traps.
Local or remote re-configuration of any NIC, physical, or virtual.
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 PXE boot enabled on LOM for ease-of-use.
 Boot from SAN (iSCSI, FCoE) configuration for networking devices through the Lifecycle
Controller GUI.
The M420 PCIe expansion connectors provide the following support:
Mezzanine Cards: A custom mezzanine connector that connects to a x8 PCIe 3.0 port.
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The mezzanine card slot supports Fabric B or Fabric C, depending on the slot in the sleeve
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where the blade is installed. This card must match the fabric type of the I/O modules installed
in the corresponding I/O module bays. Figure 6 illustrates the interconnectivity matrix and
Figure 7 illustrates interconnectivity examples for Fabric A and Fabrics B and C.
LOM: A custom network controller connector that connects to a x8 PCIe 3.0 slot.
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LOM controller through a dedicated 1 x8 PCIe 2.0 or 3.0 compatible interface
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Supports the embedded Broadcom 57810S-k 2P 10Gb
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iDRAC7 shared LOM is not supported, the blade iDRAC has a dedicated 100Mbps link
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Embedded PERC: A custom PERC + RIPS connector connects to a x4 PCIe slot.
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PowerEdge M420 Technical Guide
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