What is the form factor of the IBM EN4093R switch?

The EN4093R is a Flex System embedded I/O module designed for installation in the I/O bays of Flex System Enterprise Chassis. It measures approximately 30mm height, 401mm width, 317mm depth, integrating seamlessly with blade compute nodes for datacenter density.

How many ports does the EN4093R support?

It includes 42 internal full-duplex 10Gb Ethernet ports (14 enabled by default, scalable to 64x via licensing), 14x external SFP/SFP+ ports, and 2x QSFP+ ports for 40Gb. Plus two 1GbE ports for chassis management, supporting diverse media types like SR/LR transceivers and DAC/AOC cables.

What performance specs does it offer?

Delivers 1.28 Tbps non-blocking throughput, sub-microsecond latency, 960 Mpps, 100% line-rate, 9,216-byte jumbo frames, and 9 MB receive buffer. Cut-through switching ensures low-latency for virtualized workloads and high-bandwidth cloud apps.

Is it suitable for virtualization?

Yes, supports up to 48 vNICs per node using CN4058S adapters and four EN4093R switches. Features VMready, virtual NICs, Lenovo Virtual Fabric, and isolation for high availability, security, and performance in large-scale virtualization.

What external connectivity options are available?

External ports include 14x SFP/SFP+ for 10Gb (SR/LR/RJ-45/AOC/DAC) and 2x QSFP+ for 40Gb (SR4/LR4/BiDi/AOC/DAC breakout). First blade switch with 40GbE ports for industry-leading uplink bandwidth to core networks.

What software features does the Networking OS provide?

Includes Layer 2/3 switching, VLANs, STP/LAGs/vLAGs, QoS, stacking, EVB, SPAR, OpenFlow, IPv4/IPv6 routing/VRRP/PBR, UFP, FCoE transit. SDN-ready with easy connect modes for flexible, programmable networking.

49Y4273 - IBM EN4093R Switch

Name: 49Y4273 - IBM EN4093R Switch
Brand: IBM
SKU: 49Y4273
Price: 205 USD
Availability: InStock

49Y4273 - IBM EN4093R Switch | US IT Hardware

Product overview

The IBM Flex System Fabric EN4093R 10Gb Scalable Switch (SKU 49Y4273) is a high-performance blade chassis module designed for Flex System Enterprise Chassis I/O bays. It supports up to 64x 10Gb Ethernet connections via 42 internal full-duplex 10Gb ports and scalable licensing, with 14x SFP/SFP+ and 2x QSFP+ external ports for 10/40Gb Ethernet. Delivering 1.28 Tbps non-blocking throughput, sub-microsecond latency, and 960 Mpps, it handles dynamic virtualized workloads with Layer 2/3 switching, OpenFlow, and SDN readiness. Features include VMready, virtual NICs up to 48 per node, jumbo frames to 9,216 bytes, and cut-through switching for unicast, multicast, broadcast traffic. Compatible with Flex System compute nodes using CN4058S adapters, it enables cloud migration, low-latency high-bandwidth applications, and industry-leading external bandwidth in datacenters.

1.28 Tbps throughput, sub-μs latency, 960 Mpps
42x internal 10Gb ports, scalable to 64x connections
14x SFP+ & 2x QSFP+ for 10/40Gb external uplinks
Layer 2/3 switching, OpenFlow, SDN-ready features
VMready, up to 48 vNICs per node support
Cut-through switching, 9,216-byte jumbo frames

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	49Y4273
Brand	IBM
Condition	Refurbished
Model	EN4093R
Product Line	Flex System Fabric
Product Type	10Gb Scalable Switch
Ethernet Speed	10 Gigabit Ethernet
Switching Method	Cut-through
Network Interfaces	Scalable switch fabric for Flex System

Network & Communication

Jumbo Frames

Compatible systems

Compatible with IBM Flex System blade chassis environments

IBM Flex System
Form factor: Blade Chassis
Designed for IBM Flex System blade servers

Best for

Virtualized Environments
Supports up to 48 vNICs per compute node with CN4058S adapters and four EN4093R switches, delivering sub-microsecond latency and 1.28 Tbps throughput for dynamic workloads.
Cloud Infrastructure
Enables migration to 10/40Gb Ethernet with cloud-ready features like Lenovo Virtual Fabric, VMready, and SDN readiness via OpenFlow for scalable, low-latency networking.
Datacenter Consolidation
Provides non-blocking 960 Mpps and full line-rate performance with 42 internal 10Gb ports, ideal for high-bandwidth applications in Flex System chassis.
High-Performance Computing
Offers cut-through switching, jumbo frames up to 9,216 bytes, and 40GbE QSFP+ external ports for maximum external bandwidth and traffic growth.

Depth	317 mm (12.5 in.)
Width	401 mm (15.8 in.)
Height	30 mm (1.2 in.)
Form Factor	Blade chassis module

Internal Ports	42x 10 Gb Ethernet ports
External QSFP+ Ports	2x QSFP+ ports
Internal 1 GbE Ports	Two internal full-duplex 1 GbE ports
External SFP/SFP+ Ports	14x SFP/SFP+ ports

IBM EN4093R Switch

Product overview

Featuring

Network & Communication

Compatible systems

Best for

Frequently asked questions

Details

Shipping, warranty & returns

Customer reviews

Physical Characteristics

Interface/Ports