SRX-QSFP-40G-SR4 - Juniper Security Transceivers Overview
SRX-QSFP-40G-SR4 - Juniper Security Transceivers is a genuine fiber-optic connectivity product from Juniper, a specialist in high-performance routing and switching, trusted in service-provider and large-enterprise networks. Belonging to the Juniper family, the SRX-QSFP-40G-SR4 unit is built to the original factory specification, so it integrates with existing Juniper deployments predictably and behaves exactly as the platform documentation describes. In the network, it is deployed as a standalone unit or as part of a larger managed network, following the standard operating procedures of the platform.
From a specification standpoint, it offers 4 ports for client, server or uplink connectivity. These are the original factory figures for this model, giving administrators a clear picture of what the unit can deliver before it enters service. Standard mounting, cabling and management practices apply, so deployment follows the same procedures as other Juniper hardware already running in the environment.
Typical deployments include short-reach data-center interconnects, campus backbone fiber links, and carrier access and metro networks. Organizations commonly source it for refresh programs, capacity expansion and spares management, keeping a tested unit on hand so outages stay short and replacements are predictable. The factory detail for this unit reads: “40GE SR4 QSFP+ Pluggable Optics Module, Port Douglas”. This makes it a practical choice when original-spec hardware is required at a predictable cost.
Every unit at LinkNewNet is inspected and tested before dispatch, and stock is graded, cleaned and verified for correct operation, including port status, console access and firmware state. Our warranty coverage and responsive technical support protect the purchase after it arrives, and our team can confirm revision levels and software compatibility before you order. For volume requirements we also offer configuration checks and staged delivery options.
Contact our sales team for current availability, lead time and shipping options for the SRX-QSFP-40G-SR4. We respond quickly with stock status and a firm quote, so you can plan the refresh or expansion with confidence.
Key Specifications
Applications
Perimeter Security
Stateful inspection and threat prevention at the edge.
Branch Protection
Secure branch offices with VPN and UTM.
Data Center
High-throughput filtering for north-south traffic.
Buying a Pre-Owned SRX-QSFP-40G-SR4
Verify the unit is tested, firmware confirmed, and condition documented. Every unit is fully tested and warranty covered. Contact our team for current stock and availability.
SRX-QSFP-40G-SR4 Specifications | |
| Brand | Juniper |
| Model | SRX-QSFP-40G-SR4 |
| Type | QSFP+ Optics Module |
| Form Factor | Pluggable |
| Ports | 4 |
| Connection Type | Fiber Optic |
| Data Rate | 40 Gbps |
| Wavelength | 850 nm |
| Reach | 100 meters |
| Compatible Cables | Multimode Fiber (MMF) |
| Temperature Range | 0��C to 70��C |
| Power Consumption | 3.5 W |
| Connector Type | MTP/MPO |
| Compliance | IEEE 802.3ba |
| DDM | Yes |
| Modulation | PAM4 |
| Forward Error Correction (FEC) | Supported |
| Maximum Distance | 150 meters |
| Enhanced Functionality | Yes |
| Port Destination | Douglas |
| Diagnostic Monitoring | Digital |
| Average Output Power | -7.6 to 0.5 dBm |
SRX-QSFP-40G-SR4 - Compatibility Notes
This SRX-QSFP-40G-SR4 transceiver/module variant is specified for the reach, wavelength, and form factor indicated in the specifications above. Confirm compatibility with your switch or router platform, including the required coding (Cisco, Juniper, Huawei, H3C) and supported data rate, before ordering.
When building out or refreshing links, match the transceiver variant to the optics budget and distance of each run. Our team can confirm compatibility with specific platforms and provide bulk pricing.
Each SRX-QSFP-40G-SR4 unit is tested for correct operation and performance before dispatch, ensuring reliable link establishment on arrival.
SRX-QSFP-40G-SR4 - Juniper Series Notes
This listing is part of the Juniper enterprise networking product family, sourced and tested by LinkNewNet for enterprise deployment. Juniper SRX firewall provides stateful inspection, VPN termination, and threat defense at the network perimeter. It is commonly deployed in internet-edge, site-to-site, and remote-access roles.
Deployment guidance: When planning this SRX-QSFP-40G-SR4 unit into a network, confirm the Junos OS version required, the power and cooling profile, and the upstream/downstream interface types that match your existing infrastructure. For a like-for-like refresh, match the feature set of the units already in service so management and automation behave consistently.
Our Juniper reconditioning process: Every pre-owned Juniper unit at LinkNewNet passes a documented reconditioning flow before dispatch - visual inspection, internal cleaning, firmware verification, port-by-port testing, and configuration reset to factory defaults. This ensures the unit you receive operates reliably and integrates cleanly with your existing Juniper management tools.
Related models in this family: EX8200-8XS, EX8208-SRE320, EX8208, EX4500-40F-VC1-BF, EX4200-48T. Compare specifications to confirm the right port density, feature set and uplink options for your deployment.
