400G QSFP-DD 8x 50G PAM4 to 8x 50G SFP56 50G PAM4 Passive Breakout DAC Cable

The 400G QSFP-DD 8x 50G PAM4 to 8x 50G SFP56 50G PAM4 Passive Breakout DAC Cable, 2m is a passive breakout dac direct attach copper cable with QSFP-DD to 8x SFP56, supporting 400Gbps links over a length of 2m (7ft). As a passive cable it draws essentially no power and adds no latency to the link. It is a cost effective, low latency interconnect for 400G Ethernet, data center interconnect and 5G transport networks, and complies with QSFP-DD MSA, SFF-8432, IEEE 802.3bs-400GAUI-8, IEEE802.3cd-50GAUI-1, CMIS 4.0, SFF-8472.

Product Highlights

• QSFP-DD to 8x SFP56
• Data rate: 400Gbps
• Cable type: Passive Breakout DAC
• Length: standard options (6) from 0.5m (2ft) to 3m (10ft)
• DDM/DOM: Not Supported

Designed for 400G Ethernet, data center interconnect and 5G transport networks, the 400G QSFP-DD 8x 50G PAM4 to 8x 50G SFP56 50G PAM4 Passive Breakout DAC Cable, 2m carries 400Gbps between QSFP-DD to 8x SFP56 interfaces. This unit is manufactured in 6 standard lengths from 0.5m (2ft) to 3m (10ft). The breakout design lets one high speed port feed 8x SFP56, which raises port utilization and simplifies cabling in dense rows. For networks standardized on Arista Networks hardware, it is a drop-in equivalent of the CAB-D-8S-400G-2M. The link runs QSFP-DD-8x 50G-PAM4 SFP56-50G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.

This product is designed and tested to comply with QSFP-DD MSA, SFF-8432, IEEE 802.3bs-400GAUI-8, IEEE802.3cd-50GAUI-1, CMIS 4.0, SFF-8472. It is interoperable with Arista Networks equipment and serves as a direct equivalent to the Arista Networks part number CAB-D-8S-400G-2M.

Part number of this model: QDD-400G-8SPC. Length options are 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft), 2.5m (8ft) and 3m (10ft). Our factory also produces custom lengths beyond these on request. Wire gauge: 28AWG. Samples for testing can be arranged before bulk orders.

Transceivers and cables are individually protected against static and dust, then consolidated into sturdy cartons suitable for international courier shipment. For larger orders we shrink-wrap and strap cartons onto pallets. Tell us your warehouse or retail requirements and we will pack accordingly.

We have manufactured fiber optic connectivity products since 1995 and run our own production lines in Shenzhen. Beyond the standard catalog we build to order: special cable lengths, custom connector combinations, vendor-specific compatibility coding and private labeling. Send us your requirement and our engineers will quote a practical solution.

We ship to customers around the world every week. Express couriers handle most orders door to door in a few days; larger consignments go by air or sea to keep freight costs down. Tracking information is provided for every shipment, and we are flexible on shipping accounts and forwarders.

Before any product leaves our factory it goes through optical performance testing, compatibility verification on real switch platforms and a final visual inspection. Our in-house test lab holds a wide range of current and legacy switches from major brands, so interoperability is proven on the actual equipment your network uses rather than assumed from paper specifications.