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3m (10ft) 400G QSFP-DD to 2 x 200G QSFP56 Passive Direct Attach Copper Breakout Cable for FS Switches


≤0.5W 39.5mm Twinax PAM4

FS P/N: QDD-400G-2QPC03
FS P/N: QDD-400G-2QPC03
14 Solds
4 Reviews
0 Question
23 in Global Warehouse, Get it by 1 Aug, 2024
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Deliver to New York, 10010
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400G QSFP-DD to 2x 200G QSFP56 DAC Breakout Cable (3-meter, Passive, QSFP-DD to 2x QSFP56, 28AWG)

The 400G QSFP-DD to 2x 200G QSFP56 DAC Breakout cable assembly is designed to meet the high density requirements of standard and combo connector configurations. QSFP-DD pluggable solutions enable 400G transmission. It is fully compliant with SFF-8679, QSFP-DD MSA, IEEE802.3bj, and IEEE802.3cd standards.
QSFP-DD to 2x 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 2x 200G 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-2Q56PC03 to QDD-400G-2QPC03, but the product is the same. Only the FS P/N has been changed.

Part Number
Vendor Name
Connector Type
QSFP-DD to 2x QSFP56
Max Data Rate
Cable Type
Passive Twinax
Cable Length
3m (10ft)
Wire AWG
Minimum Bend Radius
Power Consumption
Jacket Material
Commercial Temperature Range
0 to 70°C (32 to 158°F)
IEEE802.3Bj, By, IEEE802.3CD, SFF-8679, SFF-8636
5 Years
400G Ethernet
Modulation Technology

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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.
Connectivity Solutions
Low Power Consumption for Energy-saving
Direct attach copper is suitable for very short links and offers a cost-effective way to establish a 400-Gigabit link between QSFP-DD-400G ports within racks and across adjacent racks.
Lower Power Consumption
Copper Cable
to Save OPEX
39.5mm Minimum
Bend Radius for Easy Cabling
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United States

September 20, 2023
Shipment & Delivery: On time and packaged securely with no damage to package or items delivered.
Verified Purchase
Helpful 4
Comment 0


United States

June 21, 2020
Bought these cables for upgrading our data center to 400G. Initially, we were worried about whether these cables would work on our Arista switches. They even did a compatibility test on these cables and provided a report for us. These DACs worked and fitted perfectly on our devices. Very stable connection. Five stars!
Verified Purchase
Helpful 11
Comment 0


United States

March 16, 2020
Our new data center planned to upgrade to 400G. For our in-rack links, FS guys recommended the 400G to 2x 200G QSFP56 DAC cables. I did a test when I received them, the TX and RX powers were in spec. And the transmission was stable.
Verified Purchase
Helpful 30
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