Are your optical modules compatible with Cisco, Huawei, Arista, and Juniper?

Yes. All HYTOPTODEVICE optical modules are 100% compatible with major brands including Cisco, Huawei, Arista, and Juniper switches and routers, with no configuration changes required.

Are your modules new or refurbished?

All HYTOPTODEVICE modules are brand new, original manufactured products. We do not sell refurbished or used optical modules.

Do your optical modules support DDM/DOM monitoring?

Yes. Our optical modules support Digital Diagnostic Monitoring (DDM/DOM), allowing real-time monitoring of temperature, voltage, current, TX power, and RX power.

What is your warranty policy?

HYTOPTODEVICE provides a standard warranty on all optical modules. Please contact our sales team for specific warranty terms and conditions.

Do you ship internationally from Shenzhen, China?

Yes. We ship worldwide from our facility in Shenzhen, China. International shipping is available for all orders including bulk and OEM orders.

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Home > All Collections > Optical Transceiver > 100G QSFP28 > H3C QSFP-100G-CWDM4-SM1300 Compatible 100G QSFP28 Transceiver | 1310nm(CWDM4) 2KM Module Bulk Wholesale | HYTOPTODEVICE

H3C QSFP-100G-CWDM4-SM1300 Compatible 100G QSFP28 Transceiver | 1310nm(CWDM4) 2KM Module Bulk Wholesale | HYTOPTODEVICE

H3C QSFP-100G-CWDM4-SM1300 compatible 100G QSFP28 transceiver with 4×25G NRZ signaling. CWDM4 wavelengths 1271/1291/1311/1331nm, 2km OS2 single-mode fiber reach via LC Douplex connector, DDM monitoring, plug-and-play for H3C switches. Reliable bulk supply for data center leaf-spine network upgrades. Small sample testing, private labeling, custom EEPROM coding and OEM available for project engineers, distributors and importers.

NO.	Brand	Compatible P/N	Remarks
1	Cisco	QSFP-100G-CWDM4-S
2	Arista Networks	QSFP-100G-CWDM4
3	Brocade	100G-QSFP28-CWDM4-2KM
4	Dell	Q28-100G-CWDM4
5	H3C	QSFP-100G-CWDM4-SM1300
6	HPE Aruba	R0Z30A
7	Huawei	QSFP-100G-CWDM4
8	Juniper Networks	QSFP-100G-CWDM-T2
9	NVIDIA(Mellanox)	MMA1L30-CM

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Description

H3C QSFP-100G-CWDM4-SM1300 Compatible 100G QSFP28 Transceiver | 4×25G NRZ, 2km Single Mode Fiber

Product Overview

HYTOPTODEVICE 100G QSFP28 CWDM4 transceiver serves as pin-compatible replacement for H3C QSFP-100G-CWDM4-SM1300.

It adopts four-channel CWDM architecture centered on 1300nm wavelength grid, transmitting 100G traffic via 4×25G NRZ modulation.

This module targets short-to-medium reach data center interconnections. It delivers stable transmission up to 2km over OS2 single-mode fiber.

Duplex LC interface simplifies patch panel deployment and daily fiber management.

It complies with IEEE and QSFP28 MSA standards. Built-in DDM continuously monitors optical power, temperature, voltage and laser bias.

Custom EEPROM firmware enables smooth identification on H3C equipment without unauthorized module alarms.

This affordable transceiver fits leaf-spine fabric, inter-switch trunking and top-of-rack switch to server NIC uplinks.

We provide pre-production sample testing, customized firmware and flexible bulk pricing for system integrators and data center operators.

Key Technical Specifications

H3C Compatible	QSFP-100G-CWDM4-SM1300	Vendor Name	HYTOPTODEVICE
Form Factor	QSFP28	Max Data Rate	103.125Gbps (4x 25.78Gbps)
Wavelength	1271nm, 1291nm, 1311nm and 1331nm	Max Distance	2km
Connector	Duplex LC/UPC	Transmitter Type	4 x CWDM DML (DFB)
Cable Type	SMF	Receiver Type	PIN
Modulation (Electrical)	4x 25G-NRZ	TX Power	-6.5~+2.5dBm
Power Consumption	< 3.5W	Receiver Sensitivity	< -11.5dBm
Protocols	QSFP28 MSA, SFF-8636, IEEE 802.3ba, IEEE 802.3bm, CAUI-4	Operation Temperature	0 to 70°C (32 to 158°F)

Usage Guidelines & Best Practices

Fiber Matching: This 2km CWDM4 module requires OS2 single-mode fiber. Multimode fiber leads to heavy attenuation and unreliable links.
Port Configuration: Enable RS-FEC on H3C switch ports. Forward error correction improves stability at the full 2km reach.
Installation Tips: Hot plug is supported. Avoid rough insertion to protect gold contacts. Maintain proper fiber bend radius to reduce loss.
Distance Limit: This model is designed for 2km links. For connections over 2km, select 100G LR4 transceivers.
Operating Environment: Stable operation is guaranteed at 0°C–70°C. Keep away from persistent humidity, dust or extreme heat to extend service life.

Full Compatibility List & Supported Network Hardware

1. Supported Hardware & Firmware

This LR4L WDM transceiver is preloaded with H3C-specific identification firmware.
It runs plug-and-play on validated H3C platforms and avoids persistent alarms, unstable negotiation or periodic link flaps across mainstream OS versions.

Validated H3C Device Models:

H3C S6850, S6860 Data Center Switches
H3C S5570, S5170 Enterprise Core Switches
H3C S9850 High-Density 100G Leaf-Spine Switches
All H3C platforms with standard QSFP28 100G ports

2.Cross-Brand Compatibility

The module complies with generic QSFP28 MSA standards.

It can interconnect with equipment from Cisco, Dell, Huawei and other vendors in multi-brand fabrics.

It works well during phased network refresh and hybrid infrastructure expansion.

3.Free Value-Added Services

We offer free EEPROM rewriting and private label customization.

Pre-shipment sample validation and dedicated engineering support are available.

Large-volume orders qualify for tiered pricing to reduce overall data center hardware expenditure.

Primary Application Scenarios

Data Center Leaf-Spine Uplinks: Medium-range 100G interconnections between H3C leaf and spine switches.
Core Aggregation Trunk Upgrade: Bandwidth expansion for enterprise and colocation core layers.
Campus Inter-Building Links: 2km single-mode connections across campus buildings or colocation floors.
Server Aggregation Farm: High-capacity uplinks from top-of-rack switches to central aggregation nodes.
Hybrid Multi-Vendor Fabric: Cost-effective 100G links in mixed H3C and third-party switch environments.

Connectivity Solutions(Applications)

1. Leaf-Spine Inter-Switch Uplink

This 2km CWDM4 module builds low-latency leaf-spine fabric for AmpCon-DC data center environments. It connects leaf and spine switches within the same facility, covering cross-row and cross-cabinet layouts. Consistent signal quality supports virtualization, containers and heavy east-west traffic.

2. 100G to 100G for Switch-Switch Interconnection

It upgrades inter-switch trunk bandwidth between H3C core and aggregation switches. It reuses existing single-mode fiber and minimizes new cabling labor. It increases trunk capacity to handle growing data center workloads without overbuilding fiber routes.

3.100G FOR SWITCH-NIC

It creates direct 100G uplinks between top-of-rack switches and server NICs. The 2km reach covers server farms, storage pods and clustered computing nodes inside one campus. Duplex LC connectors simplify cable routing in dense rack environments.

The Core Feature

1.Optimized Thermal Profile for Dense Racks

Power consumption stays under 3.5W. It reduces heat load in fully populated switch line cards. Standard QSFP28 form factor supports high-density port layouts.

Low power 100G QSFP28 CWDM4 transceiver for H3C dense data center rack deployment

2. Seamless H3C Recognition Without Warnings

Every batch completes live testing on H3C switches. Customized EEPROM supports safe hot insertion. It operates continuously without unknown-module logs or port lockdown risks

Full round quality tested 100G CWDM4 QSFP28 module 24/7 stable operation

3.Rigorous Pre-Shipment Validation

All modules pass optical calibration and temperature cycling screening. DDM functions are fully verified for reliable real-time monitoring. Consistent batch performance supports 24/7 production data center operation.

FAQ

Q1: When to choose 100G CWDM4 instead of standard LR4 for H3C deployments?

A1: Our H3C compatible CWDM4 module suits links up to 2km. It delivers sufficient margin for intra-data center and short campus routes without the extra cost of longer-reach LR4. For same-facility leaf-spine and server uplink layouts, it balances performance and budget well.

Q2: Why is RS-FEC recommended for 100G CWDM4 links?

A2: CWDM4 runs on a tight optical budget. RS-FEC compensates for connector loss, splice variation and minor fiber aging. Enabling FEC helps maintain error-free transmission close to the 2km limit and reduces random packet loss in production.

Q3: Can this 100G QSFP28 CWDM4 module operate in 4×25G breakout mode?

A3: This standard CWDM4 transceiver works in native 100G mode only. It cannot break out into four independent 25G channels. If your design requires 4×25G breakout, pick dedicated breakout QSFP28 models.

Q4: How to handle module alarms across H3C, Cisco or Huawei switches?

A4: Most alarms come from mismatched EEPROM identification. Our modules ship with H3C-specific firmware and support free re-programming for other platforms. We perform real-switch validation to achieve clean plug-and-play deployment.

Q5: Why do DDM wavelength readings deviate slightly from nominal 1300nm CWDM grid?

A5: Minor wavelength offset falls within MSA standard tolerance. All our modules are calibrated and screened before
shipment. Small DDM drift will not affect throughput or link stability under normal H3C operating conditions.

Q6: Do I need an optical attenuator for very short patch cord runs?

A6: Attenuators are usually unnecessary for short patch connections. Our transmit power is tuned for typical data center patch panels. Only extreme over-power scenarios causing repeated errors require an attenuator after checking module specs.

Q7: Rx power remains low after fiber cleaning. What should I check next?

A7: Inspect ferrules for scratches and cables for tight bends or crushed ducts. Swap patch cords and test alternative ports to isolate the fault. If low power follows the module, our engineering team can conduct optical testing and support bulk customers.

Q8: What does DOM Rx power close to -40dBm mean?

A8: Near -40dBm generally indicates no optical signal reaches the receiver. Common causes include disconnected fiber, damaged jumpers or inactive remote transmitter. We provide structured fault isolation steps to restore data center traffic quickly.

Q9: Is there a reliability gap between third-party compatible modules and original H3C OEM transceivers?

A9: Qualified compatible modules can match OEM performance. Our H3C CWDM4 modules use industrial chips and complete optical plus compatibility testing. The real difference lies in vendor lock-in and support contracts, not basic transmission stability.

Q10: What compliance documents should purchasers request from optical module suppliers?

A10: As a professional manufacturer, we provide RoHS certificates, MSA compliance statements, temperature cycle test records and real-switch compatibility reports. All products support traceability to meet enterprise and data center project compliance requirements.

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.

Up to 70% cost savings vs OEM, transparent pricing & flexible bulk rates, supported quality returns
100% real-device compatible with Cisco, Huawei,Dell,Juniper, and Arista
ISO 9001:2015 Shenzhen factory, full lineup: 1.25G/10G/25G/40G/100G/200G/400G/800G/1.6T transceivers
Ample stock, fast global DHL/FedEx shipping in 3–5 working days
Free pre-sales engineering support for custom EEPROM & private label firmware
Real switch test videos available for pre-purchase review; inspection & shipping videos provided per order

“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.

Rigorous Industrial Product Testing

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