here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
StarTech.com QSFP40SR4ST 40GBASE-SR4 QSFP+ Transceiver Module - 40 Gbps - 150m - MSA Compliant Fiber QSFP+
- 40GBASE-LR4 fiber transceiver adds reliable 40Gb over fiber
- Maximum Transfer Distance of 150 m (492 ft)
- QSFP+ transceiver module complies with MSA industry standards
- MPO
- fiber SFP has a low power consumption of < 0.7 W
- Fiber QSFP+ module uses a cost-effective cabling alternative to fiber
- Hot swappable with fiber optic modules
- MTBF: 1 489 426 hours
- MTBF: 1 489 426 hours
+
+
Overview
Specs
Reviews
See all Q & A 
Any questions? Ask CelesteSM will help you find out quickly.
Try me now
40GBASE-SR4 QSFP+ MSA COMPLIANT 40G QSFP+ MODULE MPO MM 150M
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 1 year
- Limited Warranty period (labor): 1 year
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-265-1844
- Support Email: support@startech.com
- Support Website
- View other products from STARTECH
LOADING...
The StarTech.com QSFP40SR4ST is a hot-pluggable 40GBASE-SR4 QSFP+ transceiver for network and data-center teams connecting compatible 40GbE equipment over multimode fiber with MPO connectors, at distances up to 150 m.
Recommended For
- Data-center teams linking 40G switch or router ports across a short run of multimode fiber that already has MPO cabling and compatible SR4 ports.
- Network operators replacing a failed QSFP+ optic or extending a 40G link on equipment confirmed to support this MSA-compliant, uncoded module.
- Teams building 40G links between nearby network devices where multimode fiber, MPO connections, and the link distance fit the SR4 installation.
- Network technicians who need a hot-swappable optic and digital diagnostics monitoring for supported switch or router environments.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | 40GBASE-SR4 network links over multimode fiber with an MPO connection, up to 150 m |
| Data Rate And Standards | Up to 40 Gbps; IEEE 802.3ba 40GBASE-SR4 and MSA compliant |
| Optical And Fiber Specifications | 850 nm wavelength for multimode optical fiber; 1 MPO port |
| Distance | Maximum reach of 150 m (492 ft.) |
| Monitoring And Installation | Digital Diagnostics Monitoring (DDM/DOM); hot-pluggable |
| Operating Conditions | Operating temperature: 0–70 °C (32–158 °F); storage temperature: −40–85 °C (−40–185 °F); humidity: 5–95% RH |
| Power | 0.7 W |
| Physical Characteristics | Aluminum color; acrylonitrile butadiene styrene material; 0.07 lb; 2.8 × 0.7 × 0.5 in. |
| Model Identifiers | StarTech.com QSFP40SR4ST; 40GBase-SR4 |
| Included Components | One QSFP+ transceiver |