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400G QSFP-DD to 8x50G SFP56 Passive Direct Attach Copper Twinax Cable

400G QSFP-DD to 8x50G SFP56 Passive Direct Attach Copper Twinax Cable

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Comply with SFF-8636&QSFP-DD MSA

Complies with Ethernet IEEE802.3bj/IEEE 802.3cd

Support serial ID function through EEPROM

Support hot swap, low crosstalk, low power consumption

RoHS compliant

Eight-lane electrical interface transmits up to 28Gbps NRZ or 56Gbps PAM4


400G QSFP DD to 8x50G SFP56 twinax copper DAC cable provides robust connections between 400G Ethernet and 50G Ethernet systems. Each cable consists of eight lanes each operating at data rates of up to 50Gb/s (PAM4). It is compliant with QSFP DD MSA and SFP56 MSA standard specifications and provide connectivity between system units with a QSFP-DD (QSFP56-DD) port on one side and up to eight different SFP56 ports on the other.


1. 400G Ethernet

2. Data Centre

3. InfiniBand HDR

4. Servers, Switches

5. Multi-platform Service Systems


Connector TypeQSFP-DD to 8 SFP56Max Data Rate400Gbps
Minimum Bend Radius33.5mmWire AWG27 to 30AWG
Cable Length0.5/1/2/3mJacket MaterialPVC (OFNR)
Cable TypePassive TwinaxProtocols200/400G Ethernet
Power Consumption<1.5WPower Supply3.3V
Temperature0 to 70°C (32 to 158°F)CertificationRoHS

Direct Attach Cables for Data Center Interconnection

Direct attach cable assemblies are ideal choices for short-reach direct connection applications. Generally, they are used in the EDA (Equipment Distribution Area) where cabinets and racks house end equipment (servers) and where horizontal cabling from the HDA (Horizontal Distribution Area) are terminated at patch panels, as shown in the following picture:

Direct Attach Cables for Data Center Interconnection

Compatible Brands

Widely compatible with Cisco, Huwei, H3C, ZTC and other SFP optical switches, routers, firewalls, network cards, etc.

400G DAC 100% compatible with 200+ vendors

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