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Lenovo Flex System EN6131 40Gb Ethernet Switch
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Lenovo Lenovo Flex System EN4091 10Gb Ethernet Pass-thru Module Easy Connectivity The Lenovo® Flex System™ EN4091 10Gb Ethernet Pass-thru offers easy connectivity .. Product #: FS-EN4091-EPM

Lenovo Flex System EN4091 10Gb Ethernet Pass-thru Module

Brand: Lenovo
Model Number: FS-EN4091-EPM

Easy Connectivity

The Lenovo® Flex System™ EN4091 10Gb Ethernet Pass-thru offers easy connectivity of the Flex System chassis to any external network infrastructure. This unmanaged device enables direct Ethernet connectivity of the compute node in the chassis to an external top-of-rack (TOR) data center switch. This module can function at both 1 Gb and 10 Gb Ethernet speeds. It has 14 internal 1 Gb or 10 Gb links, and fourteen external 1 Gb or 10 Gb SFP+ uplinks.

Flex System EN4091 10Gb Ethernet Pass-thru Module

Easy connectivity of the Flex System Chassis to any external network infrastructure. Unmanaged device enables direct connectivity of the compute node in the chassis to an external top-of-rack data center switch.

Make Convergence a Possibility

  • Direct connectivity of the compute nodes in the chassis to an external TOR data center switch
  • Ability to implement a converged environment
  • Reduce total cost of ownership (TCO) and improve performance while maintaining high levels of availability and security
  • Avoid oversubscription, which can result in congestion and loss of performance

Did You Know?

The Lenovo Flex System EN4091 10Gb Ethernet Pass-thru module provides 14 internal and 14 external 10 Gb Ethernet ports, and it supports 1 Gb and 10 Gb Ethernet signaling for Converged Enhanced Ethernet (CEE), Fiber Channel over Ethernet (FCoE), and other Ethernet-based transport protocols.

Tech Specs

Supported Transceivers and Cables:

SFP transceivers - 1 GbE

  • Lenovo 1000BASE-T SFP Transceiver (does not support 10/100 Mbps)
  • Lenovo 1000BASE-SX SFP Transceiver
  • Lenovo 1000BASE-LX SFP Transceiver

SFP+ transceivers - 10 GbE

  • Lenovo 10GBASE-SR SFP+ Transceiver
  • Lenovo 10GBASE-LR SFP+ Transceiver

Optical cables for 1 GbE SFP SX and 10 GbE SFP+ SR transceivers

  • Lenovo 1m LC-LC OM3 MMF Cable
  • Lenovo 3m LC-LC OM3 MMF Cable
  • Lenovo 5m LC-LC OM3 MMF Cable
  • Lenovo 10m LC-LC OM3 MMF Cable
  • Lenovo 15m LC-LC OM3 MMF Cable
  • Lenovo 25m LC-LC OM3 MMF Cable
  • Lenovo 30m LC-LC OM3 MMF Cable

SFP+ passive direct-attach cables - 10 GbE

  • Lenovo 1m Passive SFP+ DAC Cable
  • Lenovo 1.5m Passive SFP+ DAC Cable
  • Lenovo 2m Passive SFP+ DAC Cable
  • Lenovo 3m Passive SFP+ DAC Cable
  • Lenovo 5m Passive SFP+ DAC Cable

SFP+ active direct-attach cables - 10 GbE

  • Lenovo 1m Active SFP+ DAC Cable
  • Lenovo 3m Active SFP+ DAC Cable
  • Lenovo 5m Active SFP+ DAC Cable
  • Lenovo 1m Active DAC SFP+ Cable (replaces 95Y0323)
  • Lenovo 3m Active DAC SFP+ Cable (replaces 95Y0326)
  • Lenovo 5m Active DAC SFP+ Cable (replaces 95Y0329)

Internal ports: Fourteen internal full-duplex Ethernet ports that can operate at 1 Gb or 10 Gb speeds.

External ports: Fourteen ports for 1 Gb or 10 Gb Ethernet SFP+ transceivers (support for 1000BASE-SX, 1000BASE-LX, 1000BASE-T, 10GBASE-SR, or 10GBASE-LR) or SFP+ copper direct-attach copper (DAC) cables. SFP+ modules and DAC cables are not included and must be purchased separately

Supported Standards:

  • IEEE 802.3ab 1000BASE-T copper twisted pair Gigabit Ethernet
  • IEEE 802.3z 1000BASE-SX short range fiber optics Gigabit Ethernet
  • IEEE 802.3z 1000BASE-LX long range fiber optics Gigabit Ethernet
  • IEEE 802.3ae 10GBASE-SR short range fiber optics 10 Gb Ethernet
  • IEEE 802.3ae 10GBASE-LR long range fiber optics 10 Gb Ethernet
  • 10GSFP+Cu SFP+ Direct Attach copper

Supported I/O Adapters:

10 Gb Ethernet:

  • Embedded 10Gb Virtual Fabric Adapter in the x240
  • Embedded 10Gb Virtual Fabric Adapter in the x440
  • Flex System CN4022 2-port 10Gb Converged Adapter
  • Flex System CN4052 2-port 10Gb Virtual Fabric Adapter
  • Flex System CN4054 10Gb Virtual Fabric Adapter (4-port)
  • Flex System CN4054R 10Gb Virtual Fabric Adapter (4-port)
  • Flex System CN4058S 8-port 10Gb Virtual Fabric Adapter
  • Flex System EN4132 2-port 10Gb Ethernet Adapter

1 Gb Ethernet:

  • EN2024 4-port 1Gb Ethernet Adapter
  • Embedded 1Gb Ethernet in the x220

Network Cabling Requirements:10 Gb Ethernet:

  • 10GBASE-SR SFP+ Transceiver (46C3447), 10GBASE-SR, Up to 30 m with fiber optic cables supplied by Lenovo (see Table 2); 850 nm OM3 multimode fiber cable up to 300 m or up to 400 m with OM4 multimode fiber
  • 10GBASE-LR SFP+ Transceiver (90Y9412), 10GBASE-LR, 1310 nm single-mode fiber cable up to 10 km
  • Direct attach cable, 10GSFP+Cu, SFP+ DAC cables up to 5 m (see Table 2), SFP+

1 Gb Ethernet:

  • 1000BASE-T SFP Transceiver (00FE333), 1000BASE-T, UTP Category 5, 5E, and 6 up to 100 meters
  • 1000BASE-SX SFP Transceiver (81Y1622), 1000BASE-SX, Up to 30 m with fiber optic cables supplied by Lenovo (see Table 2); 850 nm multimode fiber cable up to 550 m (50 µ) or up to 220 m (62.5 µ)
  • 1000BASE-LX SFP Transceiver (90Y9424), 1000BASE-LX, 1310 nm single-mode fiber cable up to 10 km

Warranty: The EN4091 carries a 1-year, customer-replaceable unit (CRU) limited warranty. When installed in a chassis, these I/O modules assume your system’s base warranty and any Lenovo warranty service upgrade.

Physical Specifications:

These are the approximate dimensions and weight of the Flex System EN4091 10Gb Ethernet Pass-thru:

  • Height: 30 mm (1.2 in.)
  • Width: 401 mm (15.8 in.)
  • Depth: 317 mm (12.5 in.)
  • Weight: 3.7 kg (8.1 lb)

Shipping dimensions and weight (approximate):

  • Height: 114 mm (4.5 in.)
  • Width: 508 mm (20.0 in.)
  • Depth: 432 mm (17.0 in.)
  • Weight: 4.1 kg (9.1 lb)