Juniper EX4400 vs EX4100: Which Campus Access Switch Fits Your Network?
The Juniper EX4400 and EX4100 are both cloud-ready, Junos-powered access switches managed by Juniper Mist Wired Assurance, but they sit at different tiers of the EX line. The EX4400 is the premium, future-proofed access and small-aggregation switch with 100GbE uplinks and a deeper PoE budget, while the EX4100 is the cloud-managed entry option built to keep branch and small-campus wiring closets simple and affordable. This guide breaks down ports, PoE, uplinks, Virtual Chassis, and management so you can match the switch to the deployment.
The short answer
Choose the EX4400 when you need headroom: 100GbE uplinks and Virtual Chassis ports, the highest PoE-per-port and total PoE budget for dense Wi-Fi 6E/7 and IoT, flexible uplink modules, and a switch you can keep at the access layer for years or push into small aggregation. Choose the EX4100 when the priority is a clean, cloud-operated access layer at a lower price for branches and standard campus closets, where fixed 10GbE uplinks and PoE+ (or PoE++ on the MP models) are plenty. Both run Junos and Mist, so day-two operations feel identical; the decision comes down to uplink speed, PoE density, and budget.
Juniper EX4400 vs Juniper EX4100, head to head
Specifications side by side
- Series tier
- Premium EX access / small aggregation
- Cloud-ready entry EX access
- Port counts
- 24 or 48 ports (plus 24X SFP+ and 48MP multigig models)
- 24 or 48 ports (T, P, and MP multigig variants)
- Access port speeds
- 10/100/1000BASE-T; multigig up to 10G on 48MP
- 10/100/1000BASE-T; multigig on MP models
- Dedicated uplink/VC ports
- 2x100GbE QSFP28 (reconfigurable as uplinks)
- 4x25GbE SFP28 (reconfigurable as uplinks)
- Fixed/modular uplinks
- Optional uplink modules: 4x10G, 4x25G, 2x40G/100G
- Fixed 4x1/10GbE SFP+ uplink ports
- Max PoE per port
- Up to 90W (IEEE 802.3bt)
- 30W (P) or up to 90W (MP)
- Total PoE budget (48-port)
- Higher total budget (≈2200W on 48P with dual PSUs)
- ≈1440W (48P) / 1620W (48MP) with dual PSUs
- Virtual Chassis
- Up to 10 switches
- Up to 10 switches
- MACsec
- Supported (802.1AE)
- MACsec-256 (802.1AE)
- Operating system
- Junos OS
- Junos OS
- Cloud management
- Juniper Mist Wired Assurance
- Juniper Mist Wired Assurance
- Power / airflow
- AC or DC, redundant PSUs, selectable airflow
- AC or DC, redundant PSUs, selectable airflow
Where Juniper EX4400 wins
- 100GbE QSFP28 uplink/Virtual Chassis ports give long-term headroom and high-bandwidth stacking
- Highest PoE-per-port (90W) and the largest total PoE budget for dense Wi-Fi 6E/7 and IoT
- Flexible uplink modules (10G/25G/40G/100G) adapt to access or small-aggregation roles
- Can serve double duty at the access layer and as a compact aggregation switch
- Rich Junos telemetry feeds Mist AI for deep visibility
Where Juniper EX4100 wins
- Lower acquisition cost for standard campus and branch access
- Purpose-built for cloud operations with Mist Wired Assurance out of the box
- Fixed 4x10GbE SFP+ uplinks cover most access-layer needs without add-on modules
- MP models still deliver 90W PoE++ for Wi-Fi 6E/7 and PoE cameras
- Same Junos + Mist experience as the rest of the EX line for unified operations
Which one should you buy?
Dense Wi-Fi 6E/7 and high-power IoT closet needing maximum PoE
Pick Juniper EX4400. Its 90W-per-port PoE and larger total budget feed power-hungry APs, cameras, and IoT without throttling, with 100G uplinks to backhaul the traffic.
Standard branch or campus wiring closet on a tighter budget
Pick Juniper EX4100. Cloud-managed access with fixed 10GbE uplinks and PoE+ (or PoE++ on MP) covers typical phones, APs, and endpoints at a lower cost.
Access switch that may grow into small aggregation
Pick Juniper EX4400. Modular 10/25/40/100G uplinks and 100GbE VC ports let one platform serve access today and aggregation later.
Large stack of access switches managed as one logical device
Pick Juniper EX4400. Virtual Chassis over dedicated 100GbE ports gives higher inter-switch bandwidth for a 10-unit stack versus 25GbE on the EX4100.
Greenfield site standardizing fully on Mist cloud operations
Pick Juniper EX4100. It is purpose-built for and managed by Mist Wired Assurance, delivering AI-driven operations with minimal hardware overhead.
Frequently asked
What is the main difference between the Juniper EX4400 and EX4100?
The EX4400 is the premium access/small-aggregation switch with dedicated 100GbE uplink and Virtual Chassis ports, higher PoE-per-port and total PoE budget, and modular uplinks. The EX4100 is the cloud-ready entry access switch with fixed 10GbE SFP+ uplinks and 25GbE Virtual Chassis ports at a lower price. Both run Junos and are managed by Mist Wired Assurance.
Do both the EX4400 and EX4100 support Virtual Chassis?
Yes. Both support Virtual Chassis of up to 10 switches managed as a single logical device. The EX4400 uses dedicated 100GbE ports for higher inter-switch bandwidth, while the EX4100 uses dedicated 25GbE SFP28 ports.
Which switch has more PoE power?
The EX4400 delivers up to 90W per port (IEEE 802.3bt) with a larger total PoE budget (around 2200W on the 48-port model with dual power supplies). EX4100 P models default to PoE+ (30W), while EX4100 MP models support PoE++ up to 90W with roughly a 1440-1620W total budget. For the densest high-power deployments, the EX4400 has more headroom.
Are both managed by Juniper Mist?
Yes. Both the EX4400 and EX4100 run Junos OS and are onboarded, provisioned, and managed through Juniper Mist Wired Assurance, which applies Mist AI and Marvis for AI-driven operations, automation, and visibility into connected-device experience.
Can I mix EX4400 and EX4100 switches in one Virtual Chassis?
In general, Virtual Chassis is formed within a switch family rather than across the EX4400 and EX4100 lines, and supported combinations depend on the specific models and Junos release. For a deployment that needs to mix tiers, we can confirm the exact supported topology against current Juniper documentation before you order.
Which Juniper EX switch is better for a branch office?
For most branch offices the EX4100 is the better fit: it is the cloud-managed entry access switch with fixed 10GbE uplinks and PoE+ at a lower cost. Step up to the EX4400 if the branch needs 90W PoE density, 100GbE uplinks, or room to grow into aggregation.
Do the EX4400 and EX4100 support MACsec encryption?
Yes. Both support IEEE 802.1AE MACsec for link-layer encryption, with the EX4100 supporting MACsec-256, so you can enforce data confidentiality and integrity at the access layer on either platform.
Are these switches available on TAA-compliant GPC, SAP, or FAR-based orders?
As an authorized HPE and HPE Juniper Networking reseller, Uniqcli can source EX4400 and EX4100 switches for public-sector and government buyers, including TAA-compliant configurations and procurement through GPC, SAP, FAR, and GSA eBuy vehicles. Contact us with your contract requirements and we will quote accordingly.
How do I decide between the EX4400 and EX4100?
Map it to uplink speed, PoE density, and budget. If you need 100GbE uplinks, the highest PoE budget, modular uplinks, or an access switch that can grow into aggregation, choose the EX4400. If you want a clean, cloud-operated access layer at a lower price for branch and standard campus closets, choose the EX4100. Uniqcli can help size and quote either.
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