40G QSFP+ TO QSFP+ DAC Series 3M



40G QSFP+ to 40G QSFP+ Direct Attach Passive Copper Cables


Ø Compliant QSFP MSA specifications

Ø Fully compatible with IEEE802.3ba and Infiniband QDR specifications

Ø 40Gb/s total bandwidth

Ø 4 independent duplex channels operating at 10Gbps, also support for 2.5Gbps, 5Gbps data rates

Ø 100 ohm differential impedance system

Ø Single 3.3V power supply, low power consumption, <1.5W

Ø Low Near-End Crosstalk(NEXT)

Ø Operating case temperature: -40 to 85°C

Ø All-metal housing for superior EMI performance

Ø Precision process control for minimization of pair-to-pair skew

Ø AC coupling of PECL signals

Ø EEPROM for cable signature & system communications

Ø 30 AWG to 24 AWG cable sizes available

Ø RoHS compliant



Ø Servers

Ø Networked storage systems

Ø Routers

Ø External storage systems

Ø Data Center networking


Ø Switches

Ø Routers

Industry Standards

Ø InfiniBand Trade Association (IBTA)

Ø IEEE802.3ba

Ø 40Gigabit Ethernet ( 40G BASE – CR4)


QSFP+ (Quad Small Form-factor Pluggable Plus) copper direct-attach cables are suitable for very short distances and offer a highly cost-effective way to establish a 40-Gigabit link between QSFP+ ports of QSFP+ switches within racks and across adjacent racks. These cables are used for 40GbE and Infniband standards, to maximize performance. QSFP+ are designed to meet emerging data center and high performance computing application needs for a high density cabling interconnect system capable of delivering an aggregate data bandwidth of 40Gb/s. This interconnect system is fully compliant with existing industry standard specifications such as the QSFP MSA and IBTA (InfiniBand Trade Association). The QSFP+ cables support the bandwidth transmission requirements as defined by IEEE 802.3ba (40 Gb/s) and Infiniband QDR ( 4x10 Gb/s per channel) specifications.

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