Juniper EX4300 Series Uplink Module EX-UM-4X4SFP Overview
Juniper EX4300 Series Uplink Module EX-UM-4X4SFP is a genuine modular capacity expansion product from Juniper, a specialist in high-performance routing and switching, trusted in service-provider and large-enterprise networks. Belonging to the Juniper EX4300 Series family, the EX-UM-4X4SFP 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 installed into a compatible chassis slot, where it works alongside the supervisor and line cards to extend the platform’s capabilities.
This unit follows the original factory specification for the Juniper EX4300 Series family, covering its intended role without compatibility surprises. Standard mounting, cabling and management practices apply, and it interoperates with surrounding hardware using the same procedures as other Juniper equipment already deployed in the network.
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: “Juniper EX4300 Series Uplink Module EX-UM-4X4SFP EX4300 4-Port 10G SFP+ / 1G SFP”. 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 EX-UM-4X4SFP. We respond quickly with stock status and a firm quote, so you can plan the refresh or expansion with confidence.
Key Specifications
Applications
Capacity Expansion
Add ports and performance to existing chassis.
Upgrade Path
Modernize aging platforms with compatible modules.
Flexible I/O
Mix copper, fiber and high-speed uplinks.
Buying a Pre-Owned EX-UM-4X4SFP
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.
| EX-UM-4X4SFP | |
| Product list | |
| Product code | EX-UM-4X4SFP |
| Power cable | No |
| Button | No |
| Product parameters | |
| Application | Data Networking Optical Network |
| Expansion Slots | 4 |
| Expansion Slot Type | SFP+ SFP(mini-GBIC) |
| Introduction | The Juniper EX-UM-4X4SFP is the 4-Port 10G SFP+ / 1G SFP Uplink Module designed for use with the EX4300 series switches. The Juniper Networks EX4300 line of Ethernet switches delivers the scale and performance required for both campus and data center Gigabit Ethernet access switch deployments. |
| Compatibility | |
| Apply to | Juniper EX4300 Ethernet Switches |
EX-UM-4X4SFP - Compatibility Notes
This EX-UM-4X4SFP 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 EX-UM-4X4SFP unit is tested for correct operation and performance before dispatch, ensuring reliable link establishment on arrival.
EX-UM-4X4SFP - Compatibility Notes
This EX-UM-4X4SFP 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 EX-UM-4X4SFP unit is tested for correct operation and performance before dispatch, ensuring reliable link establishment on arrival.
EX-UM-4X4SFP - Juniper Series Notes
This listing is part of the Juniper enterprise networking product family, sourced and tested by LinkNewNet for enterprise deployment. Juniper product is deployed in enterprise network infrastructure roles, providing reliable connectivity, management, and integration with the broader Juniper ecosystem.
Deployment guidance: When planning this EX-UM-4X4SFP 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.
Model code: P = PoE (Power over Ethernet) support - this suffix indicates the feature set, power, or port type of the EX-UM-4X4SFP, which affects software licensing and regional compliance.
