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0.5m (2ft) Cisco Compatible 400G QSFP-DD to 4 x 100G QSFP56 Passive Direct Attach Copper Breakout Cable


≤0.5W 35mm Twinax PAM4

FS P/N: QDD-400G-4QPC005
FS P/N: QDD-400G-4QPC005
6 Solds
2 Reviews
5 Questions
Pre-order, Ship by 21 Aug, 2024
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Deliver to New York, 10010
Free Shipping via Fedex International Priority
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5-Year Warranty
30-Day Returns
30-Day Exchange

Cisco Compatible 400G QSFP-DD to 4x 100G QSFP56 DAC Breakout Cable (0.5-meter, Passive, QSFP-DD to 4x QSFP56, 30AWG)

The Cisco compatible cable assembly is designed to meet the high density requirements of standard and combo connector configurations. QSFP-DD pluggable solutions enable 400G transmission. This hot-swappable transceiver integrates 8 transmit and 8 receive channels. It is fully compliant with SFF-8665, QSFP-DD MSA, IEEE802.3bj, and IEEE802.3cd standards.
QSFP-DD to 4x QSFP56 cable assemblies are high performance, high bandwidth and cost effective interconnect solutions that support 400G standard applications with different data rates. FS currently offers 400G QSFP-DD to 4x 100G QSFP56 DAC in lengths of 0.5, 1, 1.5, 2, 2.5, and 3 meters, ideal for SDN, ML, and Cloud Computing.

Note: The FS P/N is changed from Q-4Q56PC005 to QDD-400G-4QPC005, but the product is the same. Only the FS P/N has been changed.

Part Number
Vendor Name
Connector Type
QSFP-DD to 4x QSFP56
Max Data Rate
Minimum Bend Radius
Wire AWG
Cable Length
0.5m (2ft)
Jacket Material
Cable Type
Passive Twinax
Commercial Temperature Range
0 to 70°C (32 to 158°F)
Power Supply
SFF-8665, QSFP-DD MSA, IEEE802.3bj, IEEE802.3 cd
Power Consumption
Modulation Format
400G-8x50G PAM4
100G-2x50G PAM4
400G Ethernet

Quality Testing Program

Take a look at our test program to get the reliable and high-performance optical transceivers.

Quality Testing Program

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Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
Low Power Consumption for Energy-saving
Direct attach copper is suitable for very short links and offer a cost-effective way to establish a 400G to 4x100G link within racks and across adjacent racks.
Lower Power Consumption
Copper Cable
to Save OPEX
35mm Minimum
Bend Radius for Easy Cabling
Tested in Host Devices for Proven Interoperability
Every unit is quality tested for compatibility in the targeted switch environment, which guarantees flawless operations.
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June 18, 2023
For high-speed networking, usually, nobody wants to use anything cheap, but this cable has really surprised me with its quality and performance. Buy these cables for my switches and servers, and have used these breakout cables for weeks, no issues occur.
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June 15, 2023
I always have an excellent shopping experience at FS. My account manager always replied to me in a good manner and the package arrived with no signs of damage. Worked perfectly on my switches. Will recommend you to my friends in this field.
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