| NO. | Brand | Compatible P/N | Transceiver Type |
| 1 | Cisco | QSFP-100G-CU1M | |
| 2 | Arista Networks | CAB-Q-Q-100G-1M | |
| 3 | Juniper | QFX-QSFP28-DAC-1M | |
| 4 | Brocade | 100G-Q28-Q28-C-0101 | |
| 5 | Dell | DAC-Q28-100G-1M | |
| 6 | Huawei | QSFP28-100G-CU1M | |
| 7 | H3C | QSFP-100G-D-CAB-1M | |
| 8 | HPE BladeSystem | 845404-B21 |
| H3C Compatible |
QSFP-100G-D-CAB-1M
|
Vendor Name | HYTOPTODEVICE |
| Connector | QSFP28 to QSFP28 | Max Data Rate | 100Gbps |
| Cable Length | 1m (3ft) | Wire AWG | AWG 30 |
| Cable Type | Passive Twinax | Power Consumption | ≤0.5W |
| Media | Copper | Operation Temperature | 0~ 70 °C (32 to 158°F) |
| Jacket Material | PVC(OFNR) | Protocols | QSFP28 MSA, SFF-8662, IEEE 802.3 |
| Minimum Bend Radius | 35mm | Application | 100 Gigabit Ethernet |
Usage Guidelines & Best Practices
Mandatory Port Setting: Host QSFP28 port must enable 100GBASE-CR4 mode; link negotiation failure will happen if forced to optical mode.
Cabling Requirements: Do not exceed the minimum 35mm bend radius, avoid sharp folding, heavy extrusion or long-term tension on the cable assembly.
Port Installation Standard: Works only with standard QSFP28 100G ports; cannot be inserted into SFP+ or XFP slots. Disable the host’s third-party transceiver lock policy in advance if required.
Maintenance Specification: Hot‑swap supported, grip the pull tab instead of pulling the cable body during plug/unplug to prevent internal conductor damage.
Operating Environment: This commercial-grade cable operates reliably within 0℃‑70℃; avoid installation beside high-heat power modules.
For detailed operation instructions, please refer to the User Guide.
Full Compatibility List & Supported Devices
Built on universal MSA open standards, this 100G QSFP28 passive copper twinax cable can interoperate with mainstream network brands including Arista, H3C, Juniper, Dell, NVIDIA Mellanox and more, for mixed-vendor rack stacking and server fabric expansion.
Q1: What high-frequency electrical features limit the maximum transmission length of a 100G QSFP28 passive copper twinax cable? A: Signal attenuation at 25G per lane and tight differential impedance control set the distance cap. HYTOPTODEVICE 100G QSFP28 passive copper twinax cable complies with MSA specs and delivers reliable links up to 5 meters.
Q2: What internal circuit differences separate passive copper twinax DAC from active retimer DAC? A: Passive twinax DAC contains no signal recovery chips and tops at 5m, while active DAC embeds retimers and equalizers to extend reach to 7–10m. HYTOPTODEVICE supplies both variants to match different rack layout needs.
Q3: What abnormal network behaviors occur when you deploy a 100G QSFP28 passive copper twinax cable beyond its rated length? A: Over-length deployment triggers intermittent link flapping, accumulating CRC errors or sudden link down. Copper high-frequency loss rises rapidly beyond design limits. Each HYTOPTODEVICE 100G QSFP28 passive copper twinax cable has clear length marking to avoid misuse.
Q4: Can I deploy a 100G QSFP28 passive copper twinax cable for inter-row switch connections across separate server cabinets? A: Passive twinax DAC is not recommended for cross-row cabling, as inter-row runs normally exceed the 5m maximum limit. AOC or fiber is the better alternative; HYTOPTODEVICE twinax cable is optimized for compact intra-rack connections.
Q5: Will 1m short 100G QSFP28 passive copper twinax cable introduce destructive signal reflection in 100G links? A: Precisely impedance-calibrated short twinax cable suppresses unwanted reflection. HYTOPTODEVICE runs eye diagram validation on every batch of 100G QSFP28 passive copper twinax cable to lock in consistent signal quality.
Q6: Will generic unprogrammed 100G QSFP28 twinax cable work plug-and-play on locked H3C, Juniper or Huawei switches? A: Generic uncoded twinax cables commonly trigger unsupported transceiver alerts on vendor-locked platforms. HYTOPTODEVICE preloads matched EEPROM signatures for Comware, Junos and VRP to achieve seamless plug-and-play operation.
Q7: What hardware and software kit do I need to rewrite EEPROM data for a 100G QSFP28 passive copper twinax cable locally? A: A dedicated EEPROM programmer plus supporting coding software are required for on-site reprogramming. HYTOPTODEVICE can offer the programmer kit, software and remote technical guidance. Most bulk buyers choose pre-coded cables to cut labor and prevent coding faults.
Q8: Does installing third-party 100G QSFP28 passive copper twinax cable automatically void H3C switch OEM hardware warranty? A: Most OEMs will not cancel the whole switch warranty just for compatible third-party twinax cable, yet hardware damage caused by defective cabling may not be covered. Factory-tested HYTOPTODEVICE 100G QSFP28 passive copper twinax cable lowers this deployment risk.
Q9: Why do Comware OS firmware upgrades sometimes fail to recognize third-party 100G twinax DAC cables? A: Major firmware releases often strengthen transceiver authentication rules, requiring updated EEPROM profiles from your cable supplier. HYTOPTODEVICE continuously updates signature libraries to align with new Comware firmware releases.
Q10: What information should I submit to the supplier for accurate pre-coding matching my H3C fabric? A: Prepare switch model, running Comware firmware version and target compatible H3C part number. Share these details with HYTOPTODEVICE, and we will pre-program your 100G QSFP28 passive copper twinax cable before bulk shipment.
Q11: What BER level can buyers expect from factory-inspected 100G QSFP28 passive copper twinax cable? A: HYTOPTODEVICE 100G QSFP28 passive copper twinax cable maintains BER below 1×10⁻¹² under full 100G bandwidth load, meeting formal data center performance standards. Batch signal testing guarantees stable low-error leaf-spine fabric operation.
Q12: Why can this 100G QSFP28 passive copper twinax cable not support newer PAM4 signaling? A: This twinax cable is engineered for 25G NRZ lanes used in 100GBASE-CR4 and lacks the electrical bandwidth required for PAM4. HYTOPTODEVICE can supply PAM4-capable cable options for 400G projects upon request.
Q13: How is the shielding structure built to reduce crosstalk between internal high-speed lanes of a 100G QSFP28 passive copper twinax cable? A: Our 100G QSFP28 passive copper twinax cable adopts individual foil shielding for each twinax pair plus an outer braided shield. This dual-layer shielding design suppresses crosstalk and EMI in dense high-speed server racks.
Q14: Are active DAC cables equipped with retimer chips and carry higher failure probability compared with passive copper twinax DAC? A: Active DAC relies on retimer chips for signal recovery. Extra semiconductor components bring more failure risks than pure all-copper twinax architecture. HYTOPTODEVICE recommends passive copper twinax cable for short rack links for superior long-term reliability.
Q15: What is the minimum permitted bend radius for your 100G QSFP28 passive copper twinax cable? A: The minimum safe bend radius for HYTOPTODEVICE 100G QSFP28 passive copper twinax cable is 35 mm. Bending tighter than this threshold deforms internal conductors and gradually raises bit error rates during continuous operation.
Packaging & Custom OEM Solutions
ESD Protection & Fast Shipping: Every transceiver is sealed in an ESD-safe bag and ready for same-day dispatch from stock.
Custom OEM & Branding: We provide logo printing, private labeling, and custom packaging to help distributors and integrators build their brand—no factory investment required.
Why Network Engineers Choose HYTOPTODEVICE
HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.
“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia
Quality Certification & Compliance
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.
We adhere to rigorous standards for our SFP modules 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.
