| NO. | Brand | Compatible P/N | Remarks |
| 1 | Cisco | QDD-4X100G-LR-S | |
| 2 | Arista | QDD-400G-PLR4 | |
| 3 | Dell | 400G-Q56-DD-LDR4 | |
| 4 | HPE Aruba | S3N94A | |
| 5 | Juniper | QDD-4X100G-LR | |
| 6 | Extreme | 400G-LR4P-QSFPDD10KM | |
| 7 | H3C | 400GBASE-PLR4 |
This HYTOPTODEVICE 400G QSFP-DD PLR4 is a direct drop-in replacement for Cisco QDD-4X100G-LR-S.
It delivers reliable 10km long-reach transmission on all Cisco Nexus switches running IOS-XE firmware.
The module adopts four independent 100G PAM4 parallel lanes at 1310nm EML wavelength.
It supports stable signal transmission up to 10km over MPO-12 APC OS2 single ribbon fiber.
Parallel PLR4 architecture removes CWDM filters to cut link loss for long campus fiber runs.
Compliant with IEEE 802.3bs and QSFP-DD MSA global industry standards.
Each unit is pre-programmed with Cisco-matched EEPROM to eliminate unsupported transceiver logs.
Integrated RS-FEC and complete DDM real-time monitoring simplify campus network O&M.
Ideal for inter-switch 400G trunking, 400G-to-4×100G breakout and enterprise structured MPO cabling.
Key Technical Specifications
| Cisco Compatible | QDD-4X100G-LR-S | Vendor Name | HYTOPTODEVICE |
| Form Factor | QSFP-DD | Max Data Rate | 425Gbps |
| Wavelength | 1310nm | Max Distance | 10km |
| Modulation Format | PAM4 | Host Required | FEC |
| Connector | MPO-12/APC | Voltage Supply | 3.3V |
| Cable Type | SMF | DDM Support | Yes |
| Transmitter Type | EML | Receiver Type | PIN |
| TX Power | -1.4~+4.5dBm | Receiver Sensitivity | < -9.1dBm |
| Operation Temperature | 0 to 70°C (32 to 158°F) | Maximum Power | < 12W |
| Protocols | QSFP-DD MSA HW Rev 5.1, QSFP-DD, CMIS Rev 5.0, | Application | 400G Ethernet, Data Center Interconnect, Infiniband Interconnects |
| IEEE 802.3cu, IEEE 802.3bs |
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.
