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EX4400-EM-4S Juniper 4x10G SFP+ Extension Module for EX4400 Series
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Juniper EX4400-EM-4S Expansion Module
The Juniper EX4400-EM-4S is a high-performance uplink expansion module designed for Juniper EX4400 Series switches. By adding four dedicated 10GbE SFP+ interfaces, it provides flexible fiber connectivity, increased bandwidth capacity, and scalable network expansion for enterprise access, aggregation, and distribution deployments.
4 × 10G SFP+ Uplinks
Adds four high-speed SFP+ interfaces for aggregation, backbone, and uplink connectivity.
Flexible Speed Support
Supports either 1GbE or 10GbE operation across all ports for deployment flexibility.
Hot-Swappable Design
Supports replacement without powering down the switch when properly disabled through CLI.
EX4400 Optimized
Designed exclusively for Juniper EX4400 Series switches to ensure seamless integration.
Quick Specifications
| Model | EX4400-EM-4S |
| Product Type | 10G SFP+ Expansion Module |
| Brand | Juniper Networks |
| Function | Adds 4 × 10GbE SFP+ Uplink Interfaces to EX4400 Switches |
| Ports | 4 × SFP+ Ports |
| Supported Speeds | 1GbE or 10GbE (all ports operate at the same speed) |
| Default Port Mode | 10GbE |
| Compatibility | Juniper EX4400 Series Switches |
| Hot Swap Support | Yes (CLI offline procedure required before removal) |
| LED Indicators | Per-Port Status LEDs |
| Software Requirement | Junos OS 21.1R1 or Later |
| Cooling | Passive Cooling (Fanless) |
| Form Factor | Fits Standard 1U EX4400 Switch Chassis |
Key Benefits
- Expanded Network Capacity – Adds four additional uplink ports to support growing bandwidth requirements.
- Flexible Deployment – Supports both 1GbE and 10GbE connectivity to match different network architectures.
- Simplified Upgrades – Easily increase uplink density without replacing existing switching infrastructure.
- Reliable Operation – Hot-swappable design minimizes service interruptions during maintenance.
- Enterprise Scalability – Ideal for campus, branch, aggregation, and distribution layer deployments requiring high-speed fiber uplinks.
Frequently Asked Questions About Product
If these questions do not dispel your doubts, please contact us
Where do your products come from?
All of our products from Cisco Disti,Cisco partner, Cisco distribution directly.
How to ship the goods?
Datadirect cooperation with FEDEX,UPS & DHL and air shipment. Orders can be tracked by express Tracking number. Air shipment will supply the B/L.
Can l use my own freight account to ship my order?
Sure, we can use your accounts to ship goods without any issue.
What's your warranty for the products you sell?
Please refer below our warranty terms.
https://www.datadirectglobal.com/pages/product-warranty-policy
Datadirect offers for all items on the website.
Cisco/Juniper:
1 year warranty for new licensed products; 3 months warranty for used, REF, etc.
Aruba:
Generally provide Limited Lifetime Warranty
PS: Limited Lifetime Warranty means the machine is damaged during normal use, datadirect can provide free warranty service. However, we cannot provide warranty for damage caused by human or violent factors.
If you need to apply for a product warranty, you need to send the defective product back to us (suzhou China). The shipping cost of the defective product and the shipping cost of the spare parts will be borne by datadirect.
The shipping cost for the return is: first receipt address to our warehouse. The shipping cost of the spare parts is from our warehouse to the first delivery address.
I want to buy a licence/service for a device, can I use it properly locally?
Fortinet, Meraki branded equipment licences purchased from us can be used globally, Cisco service needs to be confirmed by contacting us
Order Fulfillment Process
From Warehouse to Delivery: Ensuring Accuracy and Speed
Our order fulfillment process guarantees that your order is handled with the utmost care and efficiency.

Over 3 million in stock
Intelligent Warehouse

Assist customers throughout the order process
customer service

Secure and protective packing
Packaging

Accurate checks for model and quantity
Model and Quantity Verification

Fast and reliable transportation to your location
Shipping
Contact Us
If you have any needs, you can leave a message here, we will contact you as soon as possible
Address: RM I-14/FBLK2 GOLDEN DRAGONIND CTR 16-170 TAI LIN PAIROAD KWAI CHUNG
Contact: Jerry Kong
Phone: + 852-21349805
Monday to Friday.
7am to 24pm
chalice@datadirectglobal.com
whatsapp: +8618795881917





