Chelsio T540-SO-CR 4-Port 10 Gigabit Ethernet Adapter Card - Part ID: T540-SO-CR

Manufacturer: Chelsio
4-port 1/10GbE Low Profile Server Offload Adapter with PCI-E x8 Gen 3, Memory Free, Direct Attach More details...
Price: $270.00
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Chelsio T540-SO-CR 4-Port 10 Gigabit Ethernet Adapter Card - Part ID: T540-SO-CR
Chelsio T540-SO-CR 4-Port 10 Gigabit Ethernet Adapter Card - Part ID: T540-SO-CR
Product Details
High Performance, Quad Port 10GbE Unified Wire Adapter
Enables TCP, UDP over Single Unified Wire with SR-IOV, EVB/VNTag and DCB

Chelsio’s T540-SO-CR is a quad port low profile, memory free, 10 Gigabit Ethernet Server Offload adapter with a PCI Express 3.0 host bus interface. The adapter is optimized for networking, cloud computing, virtualization and other datacenter applications.
This adapter, based on the fifth generation (T5) technology from Chelsio provides the highest performance available and dramatically lowers host system CPU communications overhead. As a result, the system benefits from higher bandwidth, lower latency and reduced power consumption.

This memory free variant of the adapter doesn’t have any external memory on adapter and is best suited for L2 NIC, Traffic management, Filtering and Virtual environments. All variants of Chelsio adapters leverage a single software stack (drivers/firmware/management tools) and support all protocols concurrently. It will work with any legacy switch infrastructure and does not rely on new features such as DCB, PFC, ETS, etc.
The Unified Wire Solution
The T540-SO-CR shares the high bandwidth and low latency architecture of other T5 products. It forms the basis of high performance server adapter designs with a full suite of stateless offloads, including LRO, LSO, RSS, virtualization and traffic management.

The T540-SO-CR supports IEEE standards-based link aggregation/failover features, that makes it ideal for critical network applications requiring redundancy and high-availability capabilities.

The T540-SO-CR also includes an integrated Traffic Manager for robust and flexible flow control, traffic management, and QoS.

  • PCI Express Gen3 x8
  • Low latency user-space I/O
  • OVS Offload with OpenFlow support
  • DPDK (Data Plane Development Kit)
  • EVB, Flex10, VNTag
  • HW based firewall and NAT offload
  • Traffic filtering & management
  • IEEE 1588v2 Precision Time Protocol
  • Supports x86, Armv8 (Aarch64), IBM Power and OpenPOWER Servers

Data-Center Networking
  • Scale out servers and NAS systems
  • Consolidate LAN, SAN, and cluster networks
  • Enhanced network and server security
Cloud Computing
  • Virtualization features to maximize cloud scaling and utilization
  • Runs InfiniBand, Fibre Channel apps unmodified over Ethernet
  • Cloud ready functional and management features
  • QoS and Traffic management
Networked Storage
  • Enable high performance NAS systems and Ethernet-based SANs
  • Develop shared-storage systems providing both file- and block-level services
  • Build high performance storage backend fabrics using Ethernet


Host Interface
  • PCI Express Gen 3 x8
  • MSI-X, MSI and support for legacy pin interrupts
  • 128 Virtual and 8 Physical functions
  • 140 port virtual switch
  • OVS Offload
  • EVB, VEPA, Flex10, VNTag
  • 512 MAC addresses
  • NVGRE, VxLAN and GENEVE support
Stateless Offloads
  • TCP/UDP checksum offload for IPv4 & IPv6
  • TSO, LSO, and GSO for IPv4 & IPv6
  • VLAN filtering, insertion & extraction
  • Line rate packet filtering and attack protection
  • Fine granularity time stamping (down to 2ns)
  • Ethernet Routing (packet header rewrite)
  • Packet Tracing and Packet Sniffing
  • IEEE 802.3ae (10 GbE)
  • IEEE 802.3az (Energy Efficient Ethernet)
  • IEEE 802.3z (1 GbE)
  • IEEE 802.1P priority
  • IEEE 802.1Q VLAN tagging
  • IEEE 802.1Qbg EVB/VEPA
  • IEEE 802.Qhn VNTag
  • IEEE 9-2/1Qg/h Congestion Notification
  • IEEE 802.3x flow control
  • IEEE 802.3ad load-balancing and failover
  • Ether II and 802.e encapsulated frames
  • Multiple MAC addresses per interface
  • Jumbo Frames up to 9.6Kbytes
Physical and Environmental
  • Fully RoHS Compliant
  • Operating Temp: 0 to 55ºC or 32 to 131ºF
  • Operating Humidity: 5 to 95%
  • Airflow: 200 lf/m
  • Typical power: 11W
  • Low Profile: H: 2.731” x L: 6.6”

  • 1-year limited hardware warranty – free repair or replacement for faulty hardware due to Chelsio defect or failure.
  • Extended warranty to 3 years can be purchased within first year.
  • 30 days free technical support, software maintenance & upgrades with the purchase of any Chelsio adapter or software product.

Ordering Info

Model: T540-SO-CR
Physical Interface: 10GBASE-SR or LR*
Connector: SFP+
Media: MMF/SMF fiber or twinax (up to 5m)


SM10G-SR: 10G short-reach SFP+ optic module
SM10G-LR: 10G long-reach SFP+ optic module
SRCABLE3M: 3M Fibre optic cable, 10GBASE-SR
LRCABLE3M: 3M Fibre optic cable, 10GBASE-LR

* SFP+ optics sold separately. Only Chelsio-supplied modules may be used

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