| NO. | Brand | Compatible P/N | Remarks |
| 1 | Cisco | QSFP-4SFP25-CU1M | |
| 2 | Arista Networks | CAB-Q28-S28-1M | |
| 3 | Brocade | 100G-Q28-S28-C-0101 | |
| 4 | Huawei | QSFP-4SFP25G-CU1M | |
| 5 | Juniper | QFX-Q-S-DAC-1M | |
| 6 | Dell | DAC-Q28-4SFP28-25G-1M |
This 1-meter breakout cable connects one 100G QSFP28 port to four 25G SFP28 ports.It is fully compatible with Brocade equipment and replaces the Brocade 100G-Q28-S28-C-0101 line.
Designed for short distances, the passive copper breakout cable offers a highly cost-effective interconnect solution for data centers. With nearly 0 power consumption and ultra-low latency, it offers a highly cost-effective alternative to expensive optical transceivers and fiber patch cords.seamlessly merges 100G switches with 25G host adapters, switches, and high-speed enterprise servers.
Compatibility and Supported DevicesBrocade ICX Series: ICX 7850-32C, ICX 7850-48F (using 100GbE uplink/stacking ports configured for breakout mode)
Brocade SLX Series: SLX 9150, SLX 9250, SLX 9540
Brocade VDX Series: VDX 8770 (with compatible 100G line cards)
Brocade Gen 6 / Gen 7 Platforms: Select SAN directors and switches running 100GbE clustering or ISL (Inter-Switch Link) sub-cards.
Enterprise Server NICs: Fully compatible with 25G PCIe network adapters from Mellanox/NVIDIA (ConnectX-5/6 Lx), Intel (XXV710), and Broadcom installed in standard enterprise rack servers.
The 1-meter passive breakout DAC cable is designed for tight, intra-rack architectures. Its primary use cases include:
100G-to-25G Bandwidth Distribution: Aggregating four 25G downstream ports into a single 100G upstream port to optimize port efficiency on core switches.
ToR Switch-to-Blade Node Links: Connecting high-density Brocade IP or storage switches to up to four individual server blades or network cards within the same rack.
Fibre Channel & NVMe Storage Cluster Expansion: Linking high-performance 25G flash-storage arrays directly to a 100G core cluster network.
Zero-Power Short Runs: Bridging hardware within a 1-meter range to eliminate the power consumption, heat, and transceiver costs associated with active optics.
| Brocade Compatible | 100G-Q28-S28-C-0101 | Vendor Name | HYTOPTODEVICE |
| Connector | QSFP28 to 4xSFP28 | Max Data Rate | 100Gbps |
| Cable Length | 1m (3.3ft) | AWG | AWG 30 |
| Jacket Material | PVC(OFNR) | Minimum Bend Radius | 25mm |
| Operation Temperature | 0~ 70 °C (32 to 158°F) | Protocols | 100 Gigabit Ethernet |
Q1: What makes the "100G-Q28-S28-C-0101" different from a standard 100G DAC cable? A1: The 100G-Q28-S28-C-0101 is a breakout cable. it features a 100G QSFP28 connector on one end. the other end is four 25G SFP28 connector.
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 Brocade and the other end is coded for the other brand (e.g., Cisco, Dell, or HPE).
Q3:Is the 100G-Q28-S28-C-0101 an active or passive cable? A: No, it's a passive breakout cable. It contains no active signal amplification circuitry, boasts extremely high reliability, excellent power consumption (almost 0W), and outstanding latency.
Q4: What is the maximum distance for the 100G-Q28-S28-C-0101? A4: Its maximum physical length is 1 meter (3.3 feet).it transports with a passive copper twinax cable.
Q5:Can I use this Brocade-coded DAC cable to connect a Brocade switch to a Cisco or HPE switch?A5:If you use a standard Brocade-coded cable, the Cisco/HPE end might reject it due to vendor locking. For cross-vendor environments, it is highly recommended to order a Dual-Vendor Coded Cable (Brocade-coded on End A, and Cisco/HPE-coded on End B) to ensure seamless plug-and-play compatibility on both sides.
Q6: Can this breakout cable be used for 10G or 40G applications? A6: No. Their Signal Architecture mismatch, the EEPROM Coding also differ.This DAC breakout cable is specifically optimized for 100G-to-4x25G configurations.
Q7:Will Brocade EOS recognize this cable as genuine? A7: Yes. Our compatible breakout cables are flashed with the authentic Brocade vendor profile. The switch will recognize it as a 100G-Q28-S28-C-0101.
Q8:What is the power consumption for DAC breakout cable? A8: Our Direct Attach Copper (DAC) breakout cables are passive, it consume near-zero power (<0.1W per end), that is far more energy-efficient than fiber optical transceivers or AOCs.
Q9: Can the four SFP28 ends be plugged into different switches? A9: Yes, provided the four destination switches or servers are within the physical reach of the 1-meter breakout legs. They operate as four completely independent 25G channels.
Q10:Does this breakout cable support hot-swapping? A10: Yes. it support hot-pluggable.The breakout cable is fully compliant with SFF-8665 and SFF-8402 standards. you can plug it in or remove it while switches and servers are running, without any damage.
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.
