EX4300-48P, Juniper 48-Port Gigabit PoE+ Switch with 1100W AC Power Supply

Name: EX4300-48P, Juniper 48-Port Gigabit PoE+ Switch with 1100W AC Power Supply
SKU: EX4300-48P
Price: 3698 USD
Availability: InStock
Rating: 4.8 (28 reviews)

Overview

Juniper EX4300-48P Overview

The Juniper EX4300-48P is a fixed 1U enterprise Ethernet switch with 48 10/100/1000BASE-T PoE+ ports, four QSFP+ ports for Virtual Chassis, and a 1100W AC power supply. It delivers up to 369 Mpps forwarding and supports Virtual Chassis configurations of up to 10 switches. An optional EX-UM-4X4SFP module adds four 1GbE/10GbE SFP+ uplinks.

Key Specifications

PoE+ Ports

48 × 10/100/1000BASE-T

PoE Power per Port

Up to 30W

PoE Budget

925W with one 1100W PSU
1,440W with two 1100W PSUs

Virtual Chassis Ports

4 × QSFP+

Data Rate

496 Gbps bidirectional

Forwarding Performance

369 Mpps

Figure 1 shows the front-panel layout of the Juniper EX4300-48P Ethernet switch.

Juniper EX4300-48P front panel with 48 PoE+ network ports, Mini-USB console port, LCD panel, status LEDs, and optional SFP+ uplink module slot

The official EX4300 48-port front-panel diagram shows the Mini-USB console port, LCD panel controls, chassis status LEDs, the optional SFP+ uplink module slot, and the 48-port network interface section.

①	Mini-USB console port
②	LCD panel
③	LCD panel Menu button
④	Chassis status LEDs
⑤	LCD panel Enter button
⑥	Optional 4-port 1GbE/10GbE SFP+ uplink module
⑦	48 × 10/100/1000BASE-T PoE+ network ports

Figure 2 shows the rear-panel port and power layout of the Juniper EX4300-48P.

Juniper EX4300-48P rear panel with management port, ESD point, fan modules, QSFP+ ports, AC power-supply slots, USB port, and console port

The official EX4300 rear-panel diagram for 24-port and 48-port models, excluding the EX4300-48MP series, shows the management port, ESD point, fan modules, QSFP+ ports, AC power-supply slots, USB port, and console port.

①	RJ-45 management port
②	ESD point
③	Fan module in slot 0
④	Serial number label
⑤	QSFP+ ports
⑥	Fan module in slot 1
⑦	AC power supply slot 0
⑧	AC power supply slot 1
⑨	Power-supply slot numbers
⑩	Fan-module slot numbers and LEDs
⑪	QSFP+ port LEDs
⑫	USB Type-A port
⑬	RJ-45 console port

Best Fit Applications

Enterprise Campus Access

Provides high-density Gigabit PoE+ access for enterprise users, IP phones, wireless access points, cameras, and other powered endpoints.

PoE Endpoint Connectivity

Delivers up to 30W per port for compatible PoE+ devices across wiring closets, offices, and campus access networks.

Virtual Chassis Deployment

Combines up to 10 EX4300 switches into a single logical system to simplify management and support scalable campus network growth.

Branch and Wiring Closet Networks

Fits branch and wiring-closet deployments that require PoE access, redundant power options, field-replaceable fans, and front-to-back airflow.

Why EX4300-48P

Configurable PoE Power Capacity

The PoE budget scales with the installed power configuration, supporting 925W with one 1100W PSU and up to 1,440W with two 1100W PSUs.

Scalable Virtual Chassis

Four QSFP+ ports and a 320Gbps Virtual Chassis interconnect allow up to 10 switches to operate as one logical device.

Field-Replaceable Resiliency

Hot-swappable internal power supplies and field-replaceable fan modules support serviceability in enterprise access deployments.

Compare Related Models

	EX4300-48P	EX4300-24P	EX4300-48T	EX4300-48MP	EX4300-32F
Port Configuration	48 × 10/100/1000BASE-T PoE+	24 × 10/100/1000BASE-T PoE+	48 × 10/100/1000BASE-T	24 × 1G + 24 × 1/2.5/5/10GBASE-T	32 × 100/1000BASE-X SFP
PoE	IEEE 802.3at, up to 30W per port	IEEE 802.3at, up to 30W per port	Not supported	95W PoE capability	Not supported
PoE Budget	925W single PSU 1,440W dual PSU	565W single PSU 720W dual PSU	Not applicable	Up to 1,100W with 1400W AC PSU	Not applicable
Virtual Chassis Ports	4 × QSFP+	4 × QSFP+	4 × QSFP+	4 × QSFP+	2 × QSFP+
Optional Uplink Module	EX-UM-4X4SFP	EX-UM-4X4SFP	EX-UM-4X4SFP	EX-UM-4SFPP-MR or EX-UM-2QSFP-MR	EX-UM-8X8SFP or EX-UM-2QSFP
Data Rate	496 Gbps	448 Gbps	496 Gbps	928 Gbps	464 Gbps
Forwarding Performance	369 Mpps	333 Mpps	369 Mpps	714 Mpps	345 Mpps
Power Supply	1100W AC	715W AC	350W AC	1400W AC	350W AC
Recommended Use	High-density PoE campus access	Smaller PoE access deployments	High-density non-PoE access	Multi-Gigabit and high-power access	Fiber aggregation and data center access

System Compatible Components

Category	Part Number	Description
Power Supplies	JPSU-1100-AC-AFO	EX4300 1100W AC power supply with front-to-back airflow; power cord ordered separately.
Power Supplies	JPSU-1100-AC-AFO-A	Current HCT FRU naming for the 1100W AFO AC power supply.

Category	Part Number	Description
Fan Modules	EX4300-FAN	Replacement fan module with front-to-back airflow.
Fan Modules	EX4300-FAN-AFI	Replacement fan module with back-to-front airflow.

Category	Part Number	Description
Uplink Modules	EX-UM-4X4SFP	4-port 1GbE/10GbE SFP+ uplink module for EX4300-48P.

Category	Part Number	Description
Virtual Chassis Cables and Optics	EX-QSFP-40GE-DAC-50CM	40GbE QSFP+ to QSFP+ passive direct-attach copper cable, 50cm.
	QFX-QSFP-DAC-1M	40GbE QSFP+ passive direct-attach copper cable, 1m.
	QFX-QSFP-DAC-3M	40GbE QSFP+ passive direct-attach copper cable, 3m.
	QFX-QSFP-40G-SR4	40GBASE-SR4 QSFP+ optical transceiver.

Category	Part Number	Description
Rack Mounting	EX-4PST-RMK	Adjustable 4-post rack mount kit for Juniper EX4300 switches.

Category	Part Number	Description
Licenses	EX4300-48-EFL	Enhanced Feature License for EX4300 48-port models.
	EX4300-48-AFL	Advanced Feature License for EX4300 48-port models.
	EX-QFX-MACSEC-ACC3	MACsec software license for EX4300 access switches.

Quality Certifications

Specification

Juniper EX4300-48P Specification

Product Code	EX4300-48P
Product Description	Juniper EX4300 Ethernet Switch with 48-port 10/100/1000BASE-T PoE+ and 1100W AC power supply
Product Type	Fixed Ethernet switch
Form Factor	Fixed 1U
Operating System	Junos OS
RJ-45 Network Ports	48 × 10/100/1000BASE-T
PoE Supported Port Count	48
PoE Standard	IEEE 802.3at PoE+
Maximum PoE Power per Port	30W
PoE Budget with One Power Supply	925W with one 1100W power supply installed
PoE Budget with Two Power Supplies	1,440W with two 1100W power supplies installed
Virtual Chassis Port Count	4
Virtual Chassis Port Type	QSFP+
Virtual Chassis Interconnect	320 Gbps
Maximum Virtual Chassis Members	10 switches
Optional Uplink Module	EX-UM-4X4SFP, 4-port 1GbE/10GbE SFP+ uplink module
Packet Switching Capacity	248 Gbps unidirectional / 496 Gbps bidirectional
Forwarding Performance	369 Mpps at 64-byte packets
Switching Engine Mode	Store and forward
Layer Support	Layer 2 and Layer 3
MAC Address Table	64,000 entries
VLAN IDs	4,093
Jumbo Frames	9,216 bytes
QoS Queues	12 per port
IPv4 Unicast/Multicast Routes	32,000 / 8,000
IPv6 Unicast/Multicast Routes	18,000 / 4,000
ARP Entries	64,000
Console Ports	1 × RJ-45 console port and 1 × Mini-USB Type-B console port
Management Port	1 × RJ-45 management port
USB Port	1 × USB Type-A port
Management and Monitoring	Juniper Mist Wired Assurance, Junos Space, CLI, J-Web, SNMP, RMON, sFlow, and Zero Touch Provisioning
Security Features	MAC limiting, DHCP snooping, Dynamic ARP Inspection, IP Source Guard, local proxy ARP, static ARP, captive portal, persistent MAC address configuration, and DDoS protection
MACsec	IEEE 802.1AE hardware-based encryption; MACsec license required
Default AC Power Supply	JPSU-1100-AC-AFO-A, 1100W AC, front-to-back airflow
Power Supply Slots	2
Minimum Power Supplies Installed	1 per switch
Power Supply Replacement	Hot-removable and hot-insertable
Fan Modules	2 × EX4300-FAN
Fan Module Replacement	Field-replaceable, hot-removable, and hot-insertable
Airflow Direction	Front-to-back, AFO
CPU	1.5 GHz dual-core PowerPC CPU
DRAM	2 GB
Internal Storage	2 GB
Module Slots	1
Width	17.36 in. / 44.0944 cm
Height	1.72 in. / 4.3688 cm
Depth	16.38 in. / 41.6052 cm
Depth with FRUs	17.51 in. / 44.4754 cm
Depth with Power Supply and Front Module	18 in. / 45.73 cm
Chassis Weight	13 lb. / 5.9 kg
Installed Weight	16.1 lb. / 7.3 kg with one power supply and two fan modules
Operating Temperature	0° to 45°C / 32° to 113°F
Storage Temperature	−40° to 70°C / −40° to 158°F
Operating Humidity	10% to 85%, noncondensing
Nonoperating Humidity	0% to 95%, noncondensing
Operating Altitude	Up to 3,048 m / 10,000 ft
Nonoperating Altitude	Up to 4,877 m / 16,000 ft
Seismic Tolerance	Zone 4
Maximum Acoustic Noise	51 dB
Maintenance Clearance	24 in. / 60.96 cm

Still unsure about your config? Talk to an engineer →

Quality Certifications

Customer Reviews

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Q&A

Questions & Answers

Are the products sold on router-switch.com authentic?

Yes, router-switch.com only sells 100% genuine products from authorized brands. As a multi-brand authorized distributor, all items are sourced through official channels and include valid manufacturer warranties. Customers may verify authorization via brand websites or request certification documents.

What are the power consumption features of the EX4300-48P?

The EX4300-48P includes a 1100W AC power supply to support PoE-plus features, providing ample power for connected devices, such as IP cameras and phones.

How does the EX4300-48P compare to similar switches?

The EX4300-48P offers superior PoE-plus support and scalability compared to similar switches in its class, like the Cisco Catalyst 2960-X Series.

How do I troubleshoot common issues on the EX4300-48P?

Consult the user manual for troubleshooting guides, perform a device reboot, and check cable connections; for complex issues, contact Juniper support.

Learn More

Are the products sold on router-switch.com authentic?

Yes, router-switch.com only sells 100% genuine products from authorized brands. As a multi-brand authorized distributor, all items are sourced through official channels and include valid manufacturer warranties. Customers may verify authorization via brand websites or request certification documents.

What are the power consumption features of the EX4300-48P?

The EX4300-48P includes a 1100W AC power supply to support PoE-plus features, providing ample power for connected devices, such as IP cameras and phones.

How does the EX4300-48P compare to similar switches?

The EX4300-48P offers superior PoE-plus support and scalability compared to similar switches in its class, like the Cisco Catalyst 2960-X Series.

How do I troubleshoot common issues on the EX4300-48P?

Consult the user manual for troubleshooting guides, perform a device reboot, and check cable connections; for complex issues, contact Juniper support.

What accessories are available for the EX4300-48P?

Available accessories include power cords, transceivers, mounting kits, and additional power supplies for redundancy.

Are there any alternative products to the EX4300-48P?

Alternatives to the EX4300-48P include the Juniper EX2300 and Cisco Catalyst 3850 Series, depending on specific network requirements and budget.

Does the EX4300-48P require software upgrades?

Regular software updates are recommended to ensure optimal performance, security, and access to new features on the EX4300-48P.

How do I install the EX4300-48P switch?

The EX4300-48P can be rack-mounted using the included mounting kit and should be connected to a compatible network infrastructure following the user manual.

What applications is the EX4300-48P suitable for?

The EX4300-48P is suitable for enterprise access and aggregation network applications, offering high-density port configurations and PoE-plus power.

How cost-effective is the EX4300-48P switch?

The EX4300-48P provides robust performance and scalability at a competitive price, making it a cost-effective choice for enterprise networks.

What are the main features of the EX4300-48P?

The EX4300-48P offers 48 ports with 10/100/1000BaseT PoE-plus support and a 1100W AC power supply, making it ideal for high-density network environments.

What is the warranty for the juniper ex4300 poe+?

juniper ex4300 poe+ comes with a limited lifetime warranty.

What is the operating temperature range of the juniper ex4300 poe+?

juniper ex4300 poe+ has an operating temperature range of 0 to 45'C (32 to 113'F).

Is the juniper ex4300 poe+ fanless?

No, the juniper ex4300 poe+ has multiple fans for cooling.

What is the maximum power consumption of the juniper ex4300 poe+?

The juniper ex4300 poe+ has a maximum power consumption of 2160W.

What is the power supply for the Ejuniper ex4300 poe+?

The juniper ex4300 poe+ has dual internal power supplies.

What are the dimensions of the EX4300 48P?

The dimensions of the EX4300 48P are 44 x 440 x 398 mm (1.73 x 17.3 x 15.67 in).

Does the EX4300 48P support Layer 3 functionality?

Yes, the EX4300 48P supports Layer 3 functionality.

What is the maximum data transfer rate of the EX4300 48P?

The EX4300 48P supports a maximum data transfer rate of 1 Gbps per port.

What is the maximum PoE output of the EX4300 48P?

The EX4300 48P has a maximum PoE output of 1440W.

What is the EX4300 48P?

The EX4300 48P is a 48-port Gigabit Ethernet switch with PoE support from Juniper Networks.

Can you use a Cisco SFP in a Juniper switch?

Cisco SFP ( GLC-SX-MM) can be used with EX2200 Juniper Switch.

What are Juniper EX Series switches?

EX Series switches are cloud-ready, high-performance access and distribution/core-layer devices for enterprise branch, campus, and data center networks. With the EX Series, wired access networks don't have to be complex—you can reduce risk and cost without compromising performance, quality, or innovation.

How many ports does a Juniper switch have?

Ports are numbered 0 through 5 on the 6-port Gigabit Ethernet uPIM, 0 through 7 on the 8-port Gigabit Ethernet uPIM, and 0 through 15 on the 16-port Gigabit Ethernet uPIM.

Are Juniper switches good?

Juniper Switches are a great option for new network infrastructure. A complex but also manageable interface. Spent quite sometime learning the interface but was very impressed on the operating system and implementation for hardware and software.

How is the Juniper switch?

Juniper switches deliver agile, reliable, and scalable networks with AI-powered automation and insights.

Are Juniper switches better than Cisco?

Cisco is a tried and true product with loads of support and products. Juniper on the other hand is a great value, providing high scalability and a vast amount of features.

Can you use a Cisco SFP in a Juniper switch?

Cisco SFP ( GLC-SX-MM) can be used with EX2200 Juniper Switch.

What are Juniper EX Series switches?

EX Series switches are cloud-ready, high-performance access and distribution/core-layer devices for enterprise branch, campus, and data center networks. With the EX Series, wired access networks don't have to be complex—you can reduce risk and cost without compromising performance, quality, or innovation.

How many ports does a Juniper switch have?

Ports are numbered 0 through 5 on the 6-port Gigabit Ethernet uPIM, 0 through 7 on the 8-port Gigabit Ethernet uPIM, and 0 through 15 on the 16-port Gigabit Ethernet uPIM.

Are Juniper switches good?

Juniper Switches are a great option for new network infrastructure. A complex but also manageable interface. Spent quite sometime learning the interface but was very impressed on the operating system and implementation for hardware and software.

How is the Juniper switch?

Juniper switches deliver agile, reliable, and scalable networks with AI-powered automation and insights.

Are Juniper switches better than Cisco?

Cisco is a tried and true product with loads of support and products. Juniper on the other hand is a great value, providing high scalability and a vast amount of features.

Can you use a Cisco SFP in a Juniper switch?

Cisco SFP ( GLC-SX-MM) can be used with EX2200 Juniper Switch.

What are Juniper EX Series switches?

EX Series switches are cloud-ready, high-performance access and distribution/core-layer devices for enterprise branch, campus, and data center networks. With the EX Series, wired access networks don't have to be complex—you can reduce risk and cost without compromising performance, quality, or innovation.

How many ports does a Juniper switch have?

Ports are numbered 0 through 5 on the 6-port Gigabit Ethernet uPIM, 0 through 7 on the 8-port Gigabit Ethernet uPIM, and 0 through 15 on the 16-port Gigabit Ethernet uPIM.

Are Juniper switches good?

Juniper Switches are a great option for new network infrastructure. A complex but also manageable interface. Spent quite sometime learning the interface but was very impressed on the operating system and implementation for hardware and software.

How is the Juniper switch?

Juniper switches deliver agile, reliable, and scalable networks with AI-powered automation and insights.

Are Juniper switches better than Cisco?

Cisco is a tried and true product with loads of support and products. Juniper on the other hand is a great value, providing high scalability and a vast amount of features.

The price is cheap, is the product authentic?

All products are original and authentic. The conditions of the items are all "newly sealed". All projects are fully tested under working conditions by HP certified engineers under the customer's permission.

Warranty

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