400G Optical Transceiver Modules Tested for Guaranteed Interoperability
Each 400G optical transceiver module undergoes rigorous quality testing within target host devices to ensure seamless compatibility and flawless network performance.
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NS-QDD-400G-SR8 400G Base-SR8 QSFP-DD PAM4 850nm 100m MTP/MPO OM3 FEC Optical Transceiver Module
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NS-QDD-400G-SR8 400G Base-SR8 QSFP-DD PAM4 850nm 100m MTP/MPO OM3 FEC Optical Transceiver Module
$197.00
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Thorough Testing Ensures High Reliability of 400G Optical Transceiver Modules
Our 400G optical transceiver modules are qualified through strict testing procedures using advanced equipment, guaranteeing you receive high-quality and dependable optical performance.
NS-QDD‑400G‑SR8 Transceiver Module | 400 Gbps, 850 nm PAM4, MPO‑16 APC, 100 m
Product Overview
The NS-QDD‑400G‑SR8 is a high‑density QSFP‑DD optical module engineered for 400 Gigabit Ethernet over multimode fiber.
It uses eight parallel lanes of PAM4-modulated 50 Gbps signals (8×50G = ~400 Gbps total) on an 850 nm VCSEL array, transmitting over up to 70 m on OM3 or 100 m on OM4 multimode fiber via an MPO‑16 APC connector.
Hot‑swappable and compliant with IEEE 802.3bs (400GBASE‑SR8) and QSFP‑DD MSA, it also supports required host-side FEC and includes Digital Diagnostic Monitoring (DDM/DOM) support across operating conditions.
Compatible Brands
The NS-QDD‑400G‑SR8 is universally compatible across all brands. If you need to verify compatibility with your specific switch model, please click Contact Us Now for assistance.
Product Details
Engineered to Cisco-compatible NS-QDD‑400G‑SR8 specifications, this transceiver supports 8×50G PAM4 optical channels, running at up to 425 Gbps in dual-rate operation.
It supports breakout to 2×200G or 8×50G links and passed interoperability validation with major platforms. Host-side FEC is required for signal integrity. Power consumption remains under 12 W and the module is certified to operate between 0 °C and 70 °C.
Key Specifications
| Specification | Details |
|---|---|
| Vendor Name | Network‑Switch |
| Form Factor | QSFP‑DD |
| Max. Data Rate | Up to 425 Gbps (8×50 Gbps PAM4 lanes) |
| Wavelength | 850 nm VCSEL array |
| Max. Cable Distance | 70 m (OM3) / 100 m (OM4 MMF) |
| Connector | MPO‑16 APC |
| Media Type | Multimode Fiber (MMF) |
| Modulation Format | PAM4 |
| Digital Diagnostics (DDM/DOM) | Supported |
| TX Power (per lane) | –6.5 dBm to +4 dBm |
| Receiver Sensitivity | Typically < –7.9 dBm |
| Power Consumption | ≤ 12 W |
| Operating Temperature Range | 0 °C to 70 °C (Commercial) |
| Protocol Compliance | IEEE 802.3bs SR8, QSFP‑DD MSA |
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Quality Certifications
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Warranty
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Original New Sealed Enterprise Hardware: 3 Years
Original New Sealed Consumer Devices: 1 Year
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If your products failed, you must contact your sales representative to verify product failure. If the problem still can't correct by remote support methods i.e. email or phone support, the RMA procedure will issue.
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Refund Policy
At Network-switch.com, we aim to provide the best customer experience and ensure that your purchases meet your expectations. If for any reason you are not satisfied with your purchase, please read our return and refund policy below to understand your options.
Returns
You have the right to return products purchased from Network-switch.com under the following conditions:
- Eligibility for Return: Items can be returned within 30 days from the date of delivery, provided that the product is in its original condition, unused, and in the original packaging.
- Non-returnable Items: Certain items such as personalized or custom-made products, and items marked as non-returnable at the time of purchase, cannot be returned.
- Return Process: To initiate a return, please contact our customer support team at help@network-switch.com. You will be provided with instructions on how to return the product and obtain a return authorization number if necessary.
Refunds
- Refund Process: Once we receive your returned item and inspect it, we will process your refund to the original method of payment within 7 business days.
- Refund Conditions: Refunds will be issued for the purchase price of the item, excluding any shipping, handling, or other additional fees. If the product is returned damaged, used, or missing parts, a partial refund may be issued.
Exchanges
If you would prefer to exchange an item for a different size, color, or model, please follow the same return process. Once we receive the returned product, we will send the replacement at no additional charge, based on availability.
Shipping Costs
- Return Shipping Fees: You are responsible for paying the return shipping costs unless the item is defective, damaged, or incorrect.
- Refund for Shipping Costs: Shipping costs are non-refundable, except in the case of defective or incorrect items.
- Restocking Fees: You would be chagred about 30% of the product price when return the item, unless the item is defective, damaged, or incorrect.
Damaged or Incorrect Items
If you receive a damaged or incorrect item, please contact our customer service team within 7 days of receiving the product. We will exchange once the return is received.
Contact Us
If you have any questions or concerns about returns or refunds, please contact us at:
Email: help@network-switch.com
Before returning any products, please contact us to explain the issues you are experiencing. In many cases, we can resolve the problem through technical support, and you won't need to return the product.
If there are irreparable defects in the device, you can return it to us for repair or replacement under our twelve-month warranty. Simply reach out to us, and we will provide you with a return code, our return address, and any additional instructions.
Please do not return any items without first contacting us. We will guide you through the process, including the appropriate shipping methods.