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400GbE to 8x50GbE (QSFP-DD to 8xSFP56) Passive Direct Attach Cable

DAC-400G-QDD-8*SFP

from $129.00

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  • 400G to 8x50G data rate
  • Support up to 3m on 26AWG
  • Hot pluggable and I2C interface
  • QSFP56-DD and SFP56 form factor
  • Support 8x50Gb/s PAM4 modulation
  • Compliant with IEEEP802.3cd/802.3bj/802.3by
  • Operating case temperature range: 0 to +70ºC
400G to 8x50G (QSFP-DD to 8xSFP56) Direct Attach Cable

Generic Compatible 400G to 8x150G DAC Cable (1-3m, Passive, QSFP56-DD to SFP56, 26 – 30AWG)

The 400G to 8x50G DAC cable assembly is suitable for connecting 8 x 50 Gigabit Ethernet links using copper wire. The system components are connected via eight distinct 50GbE connectors on four sides and a 400GbE connector on one side. The cable links the eight SFP56 multiport ends to the single QSFP56-DD end, this QSFP56-DD end has sixteen pairs of data signals connected to these SFP56 multiports.
The direct attach cable assemblies provide high-performance, low-cost I/O solutions for LAN, HPC, and SAN. They are compatible with IEEE802.3cd/802.3bj/802.3by, QSFP-DD-MSA, and SFF-8636. The cable length is 1m, 2m, and 3m. The passive DAC splitter cable is ideal for high-frequency trading enterprise networks and 5G/6G Infrastructure.

Specification

Form FactorQSFP-DD to 8xSFP56Modulation FormatPAM4
Max. Data Rate400GbpsBaud Rate per Lane(PAM4) 26.5625 GBaud/s
MediaCopperCable DistanceUp to 3m
Humidity(non-condensing)5 -85%Cable TypePassive Twinax
Temperature Range0°C to 70°CMin Bend Radius55mm(QSFP-DD) | 24mm(SFP56)
Wire AWG30AWG(1m, 2m) | 26AWG(1m, 2m, 3m)ApplicationData centers, enterprise networks
Vendor NameAsterfusionProtocolsQSFP-DD MSA, SFF-8636, IEEE802.3cd/802.3bj/802.3by

Questions & Answers

What are the applications of 400G QSFP-DD to 8x50G SFP56?
This direct attach cable is intended for short-distance transmission in data centers.
  • Edge computing implementations require several 50G connections.
  • Network disaggregation using 50G endpoints
  • Integrate legacy systems with modern 400G infrastructure.
  • Offer affordable 50G connectivity options.

What are the operational specifications?
  • Operating case temperature range: 0°C to +70°C.
  • Storage temperature range: -20°C to +85°C.
  • Humidity: 5–95% (non-condensing).
  • Typical Baud Rate per Lane(PAM4): 26.5625GBaud/s.
What should I do if the cable doesn’t work?
First, secure the cord to both ports. If problems persist, verify the device’s 400G data rate compatibility. If the situation persists, contact customer support for help or a warranty replacement.

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