Juniper JNP-QSFP-100G-SR4 QSFP28 100GBase-SR4 100G Multimode Optical Transceiver
Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.
Tested to factory specification. Backed by 25 years of enterprise trust.

Juniper JNP-QSFP-100G-SR4 QSFP28 100GBase-SR4 100G Optical Transceiver
Tested to factory specification. Backed by 25 years of enterprise trust.
The Juniper JNP-QSFP-100G-SR4 is a high-performance QSFP28 100GBase-SR4 optical transceiver designed for short-range, high-density 100 Gigabit Ethernet deployments. Whether you're scaling your data center, expanding your core network, or upgrading existing infrastructure, this module delivers the reliability and throughput that modern enterprise environments demand.
This unit is offered in professionally refurbished condition, thoroughly inspected, cleaned, and tested to meet original factory specifications. At WhaleyComm, "refurbished" means restored to full operational integrity — not just wiped and resold. Every unit undergoes rigorous quality assurance before it ships.
Product Specifications
- Manufacturer Part Number (MPN): JNP-QSFP-100G-SR4
- Vendor / Brand: Juniper Networks
- Product Type: Optics / Optical Transceiver
- Form Factor: QSFP28
- Speed: 100 Gigabit Ethernet (100GbE)
- Standard: 100GBase-SR4
- Fiber Type: Multimode Fiber (MMF)
- Connector: MPO/MTP
- Wavelength: 850nm
- Max Range: Up to 100m on OM4 multimode fiber
- Condition: Refurbished — Tested to Factory Specification
Why Choose WhaleyComm Refurbished?
With over 25 years of enterprise experience and more than 5,000 satisfied customers, WhaleyComm has built a reputation for delivering quality networking hardware you can trust. Our refurbished optics go through a meticulous testing and inspection process to ensure they perform exactly as the original manufacturer intended.
- ✅ Inspected and tested to factory specification
- ✅ Fully functional and ready to deploy
- ✅ Significant cost savings over new OEM pricing
- ✅ Ideal for Juniper QFX, PTX, and MX series platforms
- ✅ Trusted by enterprise IT teams, MSPs, and data center operators worldwide
Lifetime Warranty — No Time Limits. No Questions.
Every WhaleyComm unit ships with our industry-leading Lifetime Warranty. If your JNP-QSFP-100G-SR4 fails under normal operating conditions at any point — whether that's 1 year or 20 years from now — we replace it. No expiration dates. No red tape. No questions asked. That's the WhaleyComm promise, backed by 25 years of enterprise trust.
Shipping & Returns
- Shipping: Orders ship within 1–2 business days.
- Returns: Contact our support team for any DOA (Dead on Arrival) or warranty-related issues. We make it right — fast.
Compatible Platforms
The JNP-QSFP-100G-SR4 is designed for use with Juniper Networks equipment, including select QFX Series, PTX Series, and MX Series platforms supporting 100GbE QSFP28 interfaces. Always verify compatibility with your specific platform and software release before ordering.
WhaleyComm is not affiliated with or an authorized reseller of Juniper Networks. All product names, trademarks, and logos are the property of their respective owners.