What are the uplink options on this switch?

Fixed 4x 40GbE QSFP+ ports for high-speed aggregation, plus an optional 4-port 1G/10G SFP/SFP+ uplink module. QSFP+ supports DAC for Virtual Chassis interconnections, enabling up to 20 uplinks across 10 switches.

What is the performance of the Juniper EX4300-48P?

Switching capacity of 496 Gbps, forwarding rate of 369 Mpps at wire speed, and 320 Gbps Virtual Chassis backplane. The EX-PFE ASIC ensures efficient Layer 2/3 processing for campus access deployments.

Does it support Virtual Chassis technology?

Yes, up to 10 EX4300 switches interconnect via 40GbE QSFP+ ports with 320 Gbps backplane, managed as a single logical device. Supports Virtual Chassis Fabric and Junos Fusion for scalable fabrics.

What form factor and resiliency features are included?

1U rackmount chassis (17.4 x 1.7 x 16.4 in) with hot-swappable redundant power supplies, field-replaceable fans, and GRES for high availability. Ensures maximum uptime in enterprise environments.

Is the EX4300-48P suitable for cloud-managed networks?

Yes, it's cloud-ready with Juniper Wired Assurance, ZTP onboarding, and compatibility with Junos Fusion. Simplifies deployment and management for campus fabrics and connected-device experiences.

650-044930 - Juniper EX4300-48P Switch

Name: 650-044930 - Juniper EX4300-48P Switch
Brand: Juniper
SKU: 650-044930

650-044930 - Juniper EX4300-48P Switch | US IT Hardware

Product overview

The Juniper EX4300-48P (SKU 650-044930) is a 1U rackmount enterprise Ethernet switch from the EX Series, delivering Layer 2/3 capabilities for high-performance campus and data center access. It features 48x 10/100/1000BASE-T PoE+ ports supporting up to 30W per port with a 950W PoE budget from the included 1100W AC power supply, plus 4x 40GbE QSFP+ uplinks and optional 4x 1G/10G SFP/SFP+ module. With 496 Gbps switching capacity, 369 Mpps forwarding rate, and 320 Gbps Virtual Chassis backplane, it scales to 10 switches for up to 480 ports. High availability includes hot-swappable redundant power and fans. Deploy as standalone or in Virtual Chassis Fabric/Junos Fusion for IP telephony, wireless APs, and branch connectivity. Cloud-managed with Wired Assurance and ZTP onboarding.

48x PoE+ Gigabit ports, 950W budget w/1100W PSU
4x 40GbE QSFP+ uplinks + optional 1/10G SFP/SFP+
496 Gbps capacity, 369 Mpps forwarding rate
320 Gbps Virtual Chassis, scales to 10 switches
1U rackmount, hot-swap power & fans for HA
Layer 2/3 Ethernet, Wired Assurance cloud-managed

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	650-044930
Brand	Juniper
Condition	New
PoE	Yes
Model	EX4300-48P
Resiliency	Internal, hot-swappable redundant power supply; field-replaceable fans; graceful Routing Engine switchover (GRES) in Virtual Chassis configuration
Product Line	EX Series
Product Type	Ethernet Switch Full Chassis
Cloud Managed	Yes
Wired Assurance	Yes

Network & Communication

Compatible systems

No specific compatibility lists found for this SKU

Best for

Campus Access
Powers high-density IP telephony and 802.11n wireless APs with 48 PoE+ ports delivering up to 30W each and 950W budget from 1100W PSU.
Data Center Access
Provides 496 Gbps throughput and 4x40GbE QSFP+ uplinks for aggregating traffic in Virtual Chassis up to 10 switches with 320 Gbps backplane.
Branch Networking
Deploys as 1U rackmount with Layer 2/3 features, optional 1/10G uplinks, and hot-swappable power/fans for reliable edge connectivity.
Enterprise Wired Assurance
Supports cloud-managed ZTP onboarding and Virtual Chassis Fabric for scalable, zero-touch campus fabric deployments.

Data rate	496 Gbps
Throughput	369 Mpps (wire speed)
Backplane speed	320 Gbps (Virtual Chassis)

Depth	16.4 in (41.7 cm)
Width	17.4 in (44.2 cm)
Height	1.7 in (4.3 cm)
Dimensions	17.4 x 1.7 x 16.4 in (44.2 x 4.3 x 41.7 cm)
Form Factor	1U Rackmount Chassis

Network Ports	48x 10/100/1000 Base-T PoE; 4x 40GE; 4x 1G/10G SFP/SFP+
Number of Ports	48 PoE Gigabit Ethernet ports

Juniper EX4300-48P Switch

Product overview

Featuring

Network & Communication

Compatible systems

Best for

Frequently asked questions

Details

Shipping, warranty & returns

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Interface/Ports