Brocade 100G-Q28-Q28-C-0101 Compatible 1m (3ft) 100G QSFP28 Passive Dircet Attach Copper(DAC) Cable | HYTOPTODEVICE

The 100G QSFP28 DAC cable is Brocade compatible and equivalent to Brocade 100G-Q28-Q28-C-0101. It provides a highly cost-effective, short-distance 100 Gigabit link between QSFP28 ports. It is a Copper Twinax Cable ,designed for 100Gb/s high-speed interconnecting network applications. Ideal environments include data centers, high-performance computing, and enterprise core layers.

• Brocade VDX Switch Series: VDX 6740, VDX 8770 (with 100G line cards)

• Brocade ICX Series: ICX 7850-32C, ICX 7850-48F (100GbE uplink/stacking ports)

• Brocade SLX Series: SLX 9150, SLX 9250, SLX 9540

• Brocade Fibre Channel Directors & Switches: Gen 6 / Gen 7 hardware featuring 100GbE clustering or ISL (Inter-Switch Link) capabilities.

• High-Speed Storage Area Networks (SANs): Extensively used to connect Brocade’s industry-leading Fibre Channel and IP storage switches to high-density storage arrays and flash storage systems.

• Intra-Rack Switching (ToR): Perfect for Top-of-Rack (ToR) deployment where switches need to connect to adjacent servers or leaf switches within the same 1-meter proximity.

• Extreme Low-Latency Environments: Because passive copper cables do not convert electrical signals to optical (and vice versa), they offer near-zero latency—essential for high-frequency trading, real-time data replication, and virtualization.

• OPEX and CAPEX Reduction: At a 1-meter length, this DAC cable eliminates the need for expensive 100G transceivers and fiber patch cords, while drawing zero power, drastically lowering data center electricity and cooling budgets.

 Connectivity Solutions(Applications)

FAQ for 100G  QSFP28 Passive DAC Cable

Q1: Is this passive DAC cable fully compatible with official Brocade Networks hardware? A1: Yes. It is pre-programmed with Brocade-compatible EEPROM code, allowing it to be recognized instantly by Arista devices without triggering "Unsupported Transceiver" warnings.

Q2: Can I use this DAC cable to connect a Brocade switch to a switch from another brand? A2: Yes, but you need a "dual-compatible" version where one end is coded for Bocade and the other end is coded for the other brand (e.g., Cisco, Dell, or HPE).

Q3: Does this 100G DAC cable support breakout into 4x 25G channels? A3: No. The Brocade 100G-Q28-Q28-C-0101 is a direct attach copper cable, its connector type is QSFP28 to QSFP28 with 100G-to-100G link connectivity. For 4x 25G breakout, you will need a QSFP28 to 4x SFP28 breakout DAC.

Q4: What is the maximum distance supported by the 00G-Q28-Q28-C-0101? A4: As designated by the "1M" in the part number, the maximum physical length of this copper cable is 1 meter (3.3 feet), ideal for intra-rack setups.

Q5: Is Forward Error Correction (FEC) required for this 1M DAC cable? A5: Yes. According to IEEE 802.3bj standards, 100GBASE-CR4 links generally require RS-FEC (Clause 91) enabled on both host ports to ensure error-free data transmission.

Q6: What is the gauge of the copper wire used in this cable? A6: This 1-meter cable typically utilizes high-quality 30AWG or 28AWG premium twinaxial copper wire to minimize insertion loss and maintain structural flexibility.

Q7: Can this cable be used in regular SFP+ or SFP28 ports? A7: No. This cable features QSFP28 connectors at both ends and is strictly physically and electrically compatible only with 100G QSFP28 or QSFP56 ports.

Q8: Does this passive DAC cable consume a lot of power? A8: Not. our Direct Attach Copper (DAC) cables are passive and consume near-zero power (<0.1W per end), that is far more energy-efficient than fiber optical transceivers or AOCs.

Q9: What should I do if my Brocade switch shows an "unsupported transceiver" error? A9: Ensure your switch is running updated firmware. If the message persists, you can bypass it on Arista networks by entering the global configuration commands: service unsupported-transceiver and no errdisable detect cause gbic-invalid.

Q10: Is this cable hot-swappable? A10: Yes. it is hot-pluggable.you can plug in or remove the QSFP28 connectors without shutting down or rebooting the host networking equipment.use it with peace mind. 

Why Network Engineers Choose HYTOPTODEVICE

HYTOPTODEVICE has supplied over 200,000 passive Direct Attach Copper(DAC) cable to data centers and enterprise networks across 100+ countries since 2011. Every passive DAC cable undergoes comprehensive 100% performance, signal integrity, and compatibility testing before shipment。

• 100% MSA-compliant DAC with Cisco, Huawei,Dell,Juniper, and Arista compatibility
• ISO 9001:2015 certified manufacturing facility in Shenzhen
• Average lead time of 3–5 business days with DHL/FedEx express options
• Dedicated pre-sales engineering support for custom configurations
• Actual hardware,actual switches,actual results.we publish compatibility test video,eliminate compatibility anxiety. you can watch before you buy. 
• We can provide inspection and shipping videos to make you feel as if you are right here with the product.

"We replaced 100 Cisco-branded DACS with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Architect, Tier-2 ISP, England

Quality Certification & Compliance：

 At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From passive DAC cable manufacturing to final inspection, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our passive DAC cable and network solutions:

• ISO 9001: Certified quality management and production consistency.

• CE & FCC: Fully compliant for seamless Global Market Access.

• RoHS: Committed to environmental responsibility and hazardous material control.

• Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.

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