| NO. | Brand | Compatible P/N | Remarks |
| 1 | Cisco | QSFP-100G-CU1M | |
| 2 | Arista Networks | CAB-Q-Q-100G-1M | |
| 3 | Brocade | 100G-Q28-Q28-C-0101 | |
| 4 | Huawei | QSFP28-100G-CU1M | |
| 5 | Juniper | QFX-QSFP28-DAC-1M | |
| 6 | HPE(BladeSystem) | 845404-B21 |
The 100G DAC cable is huawei compatible and equivalent to Huawei QSFP28-100G-CU1M. 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.
Compatibility and Supported DevicesCloudEngine 16800 Series: CE16804, CE16808, CE16816
CloudEngine 8800 Series: CE8861-4C-EI, CE8868-4C-EI, CE8850-64C-EI
CloudEngine 6800 Series: CE6865-48S6CQ-EI, CE6881-48S6PQ-H, CE6857-48S6CQ-EI
S12700E Series (Agile Core): S12700E-4, S12700E-8, S12700E-12 (via 100GE QSFP28 interface cards)
S9300 / S9300E Series: Highly modular switches equipped with 100G uplink modules.
S6730 Series (High-Density Aggregation): S6730-H24X6C, S6730-H48X6C (utilizing the 6-port 100GE QSFP28 uplink slots)
Top-of-Rack (ToR) Interconnects: Connecting high-density 100G Huawei switches directly to servers or storage devices within the same rack.
Switch Stacking & Clustering: Linking adjacent Huawei switches together to scale port density and create a unified management fabric.
Ultra-Low Latency Links: Providing short-range, high-bandwidth connections for AI training clusters, financial trading systems, and cloud virtualization layers.
Zero-Power Short Runs: Replacing costly optical transceivers for 1-meter connections to eliminate power consumption and reduce heat in data center racks.
| Huawei Compatible | QSFP28-100G-CU1M | Vendor Name | HYTOPTODEVICE |
| Connector | QSFP28 to QSFP28 | Max Data Rate | 100Gbps |
| Cable Length | 1m (3.3ft) | AWG | AWG 30 |
| Jacket Material | PVC(OFNR) | Minimum Bend Radius | 35mm |
| Operation Temperature | 0~ 70 °C (32 to 158°F) | Protocols | 100 Gigabit Ethernet |
Q1: Is this passive DAC cable fully compatible with official Huawei Networks hardware? A1: Yes. It is pre-programmed with Huawei-compatible EEPROM code, allowing it to be recognized instantly by Huawei devices without triggering "Unsupported Transceiver" warnings.
Q2: Can I use this DAC cable to connect a Huawei 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 QSFP28-100G-CU1M 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 QSFP28-100G-CU1M? 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: Does this passive cable require any software configuration to run? A5: No, the DAC cable is completely plug-and-play. Once plugged into a compatible Huawei QSFP28 port, the link will automatically boost the line speed to 100Gbps.
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 Huawei 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 it safe to hot-plug this cable while the switch is running?A10:Yes. The DAC cable use standard hot-pluggable connectors. You can insert or remove it without disrupting network traffic on other active ports.
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。
"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.
