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Intel® Ethernet Converged Network Adapter X520 Family

Intel® Ethernet X520 Server Adapters

Intel’s new family of Intel® Ethernet Converged Network Adapter X520 are the most flexible and scalable Ethernet adapters for today’s demanding data center and cloud environments.

The Intel® Ethernet Converged Network Adapter X520 family addresses the demanding needs of the next-generation data center by providing unmatched features for virtualization, flexibility for LAN and SAN networking, and proven, reliable performance.

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Product Information

Features and Specifications

  Intel® Ethernet Converged Network Adapter X520-DA2 Intel® Ethernet Converged Network Adapter X520-T2 Intel® Ethernet Converged Network Adapter X520-SR1 Intel® Ethernet Converged Network Adapter X520-SR2 Intel® Ethernet Converged Network Adapter X520- LR1
Product code E10G42BTDA E10G42BT E10G41BFSR E10G42BFSR E10G41BFLR
Ethernet controller Intel® 82599ES Intel® 82599ES Intel® 82599ES Intel® 82599ES Intel® 82599ES
Connector and cable  SFP+ direct attach copper RJ-45 copper Fiber optic  Fiber optic  Fiber optic 
Cable type SFP+ direct attached
twin axial cabling up to 10 m		 Category-6 up to 55 m
Category-6A up to 100 m		 MMF 62.5/50 μm
up to 300 m		 MMF 62.5/50 μm
up to 300 m		 SMF up to 10 km
Slot type, maximum bus speed & slot width PCI Express* 2.0
5.0 GT/s lane x 8 lane 		 PCI Express* 2.0
5.0 GT/s lane x 8 lane 		 PCI Express* 2.0
5.0 GT/s lane x 8 lane 		 PCI Express* 2.0
5.0 GT/s lane x 8 lane 		 PCI Express* 2.0
5.0 GT/s lane x 8 lane 
Ports Dual port Dual port  Single port  Dual port  Single port 
Supported slot height/s Low profile and full height Low profile and full height Low profile and full height Low profile and full height Low profile and full height
Intelligent offloads Yes Yes Yes Yes Yes
Intel® Virtualization Technology (Intel® VT) for connectivity On-chip QoS and traffic management, flexible port partitioning, Virtual Machine Device queues (VMDq), PCI-SIG* SR-IOV-capable  On-chip QoS and traffic management, flexible port partitioning, Virtual Machine Device queues (VMDq), PCI-SIG* SR-IOV-capable
 On-chip QoS and traffic management, flexible port partitioning, Virtual Machine Device queues (VMDq), PCI-SIG* SR-IOV-capable
 On-chip QoS and traffic management, flexible port partitioning, Virtual Machine Device queues (VMDq), PCI-SIG* SR-IOV-capable
 On-chip QoS and traffic management, flexible port partitioning, Virtual Machine Device queues (VMDq), PCI-SIG* SR-IOV-capable
Storage over Ethernet iSCSI, FCoE, NFS iSCSI, FCoE, NFS iSCSI, FCoE, NFS iSCSI, FCoE, NFS iSCSI, FCoE, NFS
iWARP/RDMA  NA NA NA NA  NA
Product support page Intel® Ethernet Server Adapter X520-DA2
 Intel® Ethernet Server Adapter X520-T2
 Intel® Ethernet Server Adapter X520-SR1
 Intel® Ethernet Server Adapter X520-SR2
 Intel® Ethernet Server Adapter X520- LR1

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