• Resilient stacking up to (8) units high, or 384 Fast Ethernet and 32 Gigabit ports for 10/100 models, or up to 448 Gigabit Ethernet ports on Gigabit models (when outfitted with optional 8-port SFP-based expansion module).

• Shared 3Com Operating System consolidates administrative control over the entire switching infrastructure contributing to a more unified network environment and providing unparalleled edge-to-core visibility.

• Scalable stackable design in both Fast Ethernet and Gigabit Ethernet formats. 48 Gbps stacking bandwidth (96 Gbps full duplex) (10/100/1000 models).

• Load-sharing and cross-stack trunking features help eliminate dropped packets, clear up traffic bottlenecks, and improve server availability (EI models only).

• 232.0 Gbps switching capacity, 172.6 Mpps forwarding rate (maximum, 10/100/1000 models with optional 2-port 10-Gigabit module).

• 10-Gigabit Ethernet modules, available for Gigabit models, for interconnecting core and distribution switches.

• 3Com Switch 4500 PWR 26-Port
  (24) 10/100 Power over Ethernet ports plus (2) dual-personality Gigabit ports.
  Sale Price: $1,250.00

• 3Com Switch 4500 PWR 50-Port
  (48) 10/100 Power over Ethernet ports plus (2) dual-personality Gigabit ports.
  Sale Price: $2,275.00

• Essential security features provide user and device authentication, enforce access control for switch management, and enhance overall network security to protect critical resources and information. The Switch 4500 also functions as an integral part of the 3Com Quarantine* solution, enabling automatic containment of security threats.

• The Switch 4500 family combines high performance switching, quality of service (QoS), and advanced traffic management features to ensure essential applications get priority. Additionally, 3Com Smart PoE delivers intelligent power management with dynamic allocation of available power resources.

• Power over Ethernet provides electrical power and data connectivity over a single Ethernet cable - resulting in significant cost savings when deploying devices like IP phones, wireless access points, and IP security cameras.

• The Switch 4500 family employs a flexible design with user-configurable "dual personality" Gigabit Ethernet interfaces, and the ability to stack up to eight switch units (384 10/100 connectivity ports) that can be managed as a single entity.

• 24 MDI-X device ports
• Device connectors: shielded RJ-45, EIA 568A/568B
• Management connectors: DB-9 female port
• Cables and Operating Distances: Category 5 or 5e, UTP or STP Ethernet cabling up to 100 m (328 ft)
• Pin assignments: data transmitted over wiring-pair pins 1/2 and 3/6
• Rates: auto negotiating 10BASE-T or 100BASE-TX
• Device Detection: P802.3af-compliant resistive power discovery algorithm with 25 K resistor
• Power over Ethernet Output Pin assignments and polarity: Power transmitted over unused wiring-pair pins 4/5
• Voltage: -48 VDC
• Device ports: 15.4 W minimum per port
• Cumulative: 200 W total output
• Power feeding: P802.3af-compliant devices can be connected directly to existing standard Category 5/5e-cabled LANs; for nonstandard or un powered devices, an external splitter can be installed to separate power and data transmissions into two separate outputs terminating at the end device.

The 3Com® Power over Ethernet Single-Port Midspan Solution can power an IEEE 802.3af compliant device, such as the 3Com Network Jack or IntelliJack™ Switch, over standard Category 5 or 5e Ethernet cabling.

This 48-volt inline power source installs right in the switch closet, eliminating an exposed power supply and extra wiring at the workspace.

Installing Power over Ethernet helps save time and money because it's less vulnerable to damage or tampering than a local power supply.

3Com NBX Telephone Power Splitter 12-Pack: 3C10223) is required per NBX telephone; splitters are only for use with 3Com Ethernet power sources (3C10220 and 3C10222).

The 3Com® NBX® Phone Power Module enables a pre-standard NBX phone to receive Power over Ethernet forwarded from a 3Com Network Jack, IntelliJack™ switch or any IEEE 802.3af-compliant power source. It's a cost-saving option that preserves existing NBX networked telephony investments for customers who choose to adopt the latest Power over Ethernet technologies, including 3Com Network Jacks and IntelliJack™ products.

This simple plug-in module allows the use of a single source of standards-compliant power for NBX, network jack, and IntelliJack™ solutions-which makes networked devices inherently more reliable and easier to manage. It also increases the flexibility of your networked telephony solutions by enabling support of standards-based inline power.

Converts the voltage and signal detection of the incoming 802.3af Power over Ethernet to match those required by an (pre-standard) NBX phone.

This module enables a 3Com NJ200 Network Jack or NJ205 IntelliJack to forward compatible power, as well as data, to select 48-Volt VoIP phones, notably to current Cisco IP Phones models 7960G, 7940G, 7910G and their retired early versions 7960, 7940 and 7910.