📋 Product Description
The 3Com 3CR17171-91 SuperStack 4 Switch 5500-EI PWR represents a professional enterprise-grade network solution designed for demanding infrastructures requiring maximum availability and high performance. This layer 2/3 manageable switch combines 24 Fast Ethernet 10/100 Mbps ports with integrated Power over Ethernet technology and 4 active Gigabit SFP ports, offering exceptional flexibility for modern enterprise networks.
Equipped with 3Com XRN (eXpandable Resilient Networking) technology, this switch allows stacking of up to 8 units to create a scalable network infrastructure supporting up to 384 Fast Ethernet ports with a stacking bandwidth of 2 Gbps full-duplex. The IEEE 802.3af Power over Ethernet feature enables direct powering of your IP phones, wireless access points, surveillance cameras, and other PoE devices via the same network cable used for data, greatly simplifying deployment and reducing installation costs.
This tested and verified model comes complete with its power cable and mounting brackets for 19-inch rack installation, ready to be integrated into your professional network infrastructure.
⚙️ Technical Specifications
🔧 Advanced Features
- Power over Ethernet (PoE) IEEE 802.3af: Direct power supply to your network devices (IP phones, cameras, WiFi access points) via Ethernet cable, eliminating the need for separate power supplies
- Layer 2/3 Switching: Full support for static and dynamic IP routing protocols for advanced network traffic management
- Quality of Service (QoS): Intelligent traffic prioritization on layers 2 to 4 to ensure performance of critical applications (VoIP, video, data)
- Enhanced Security: RADIUS authentication, SSH v2, IEEE 802.1X, ACL, packet filtering, SNMP v3 with encryption
- Link Aggregation IEEE 802.3ad (LACP): Link bundling to increase bandwidth and redundancy
- Jumbo Frame Support: Performance enhancement for large file transfers
- Resilient Stacking: Stackable architecture up to 8 units for maximum scalability without a single point of failure
- Auto MDI/MDIX: Automatic port configuration to simplify installation
- Flexible Management: Web interface, CLI, SNMP, 3Com Switch Manager for centralized administration
📦 Offer Contents
- ✅ 1x 3Com 3CR17171-91 5500G-EI PWR 28-Port Switch (tested and functional)
- ✅ 1x Power cable
- ✅ Mounting brackets for 19" rack installation
- ✅ Professional invoice with 0% VAT (paper format)
Tested and guaranteed equipment - Full protection of your purchase
✈️ Shipping and Guarantees
- 📦 Professional Packaging: Carefully prepared package with shock protection to ensure delivery in perfect condition
- 🚚 Fast and Secure Shipping: Shipped within 24-48h with tracking number provided to track your package in real time
- 🛡️ 30-Day Warranty: Full protection of your purchase with returns accepted in case of non-compliance or malfunction
- 🧾 Professional Invoice: Invoice with 0% VAT in paper format included in each package for your accounting
- ✅ Tested Hardware: Each device is rigorously tested and verified before shipment to ensure proper functioning
⚠️ Important Information
Software and Technical Support: This hardware is sold without software license or operating system. The buyer is responsible for installing and configuring the necessary firmware and software. No technical support is provided with this product. Technical documentation and firmware may be available on manufacturers' websites or user communities.
Used Condition: This professional network equipment comes from corporate IT fleets. It has been carefully tested and verified to ensure perfect operation. Minor cosmetic signs of use may be present but do not affect the technical performance of the device in any way.
Compatibility: Compatible with all standard IEEE 802.3 network equipment. SFP modules are not included and must be purchased separately according to your needs (1000BASE-SX, 1000BASE-LX, 1000BASE-T, etc.).
❓ Frequently Asked Questions (FAQ)
🔌 What is Power over Ethernet (PoE) and which devices can I power with this switch?
Power over Ethernet (PoE) compliant with the IEEE 802.3af standard allows you to power network devices directly through the Ethernet cable, without needing an additional power outlet. With this manageable 3Com 5500-EI PWR switch, you can power VoIP phones, IP surveillance cameras, wireless WiFi access points, access controllers, and other PoE-compatible equipment. Each of the 24 Fast Ethernet 10/100 ports has this built-in PoE capability, greatly simplifying the deployment of your enterprise network infrastructure.
🔗 Can I stack multiple 3Com 5500-EI switches together to increase my network capacity?
Yes, absolutely! This 3Com 5500-EI PWR switch is equipped with XRN (eXpandable Resilient Networking) technology that allows stacking up to 8 units together via Gigabit SFP ports. This resilient stacking architecture offers 2 Gbps full-duplex bandwidth and enables creating a scalable network infrastructure that can manage up to 384 Fast Ethernet ports as a single entity. The stacking also ensures high availability and redundancy without a single point of failure, ideal for critical environments requiring maximum network uptime of "five 9s" (99.999%).
⚙️ What are the differences between this 5500-EI model and other 3Com switches in the 5500 series?
The 3Com 5500-EI PWR (Enhanced Image Power) model stands out with several premium features: it includes the Enhanced Image software offering advanced Layer 3 routing, multilayer Quality of Service, and enhanced security capabilities. The "PWR" suffix indicates the presence of Power over Ethernet IEEE 802.3af on all 10/100 ports. Unlike the 5500-SI (Standard Image) models, the EI version supports XRN technology for resilient stacking, jumbo frames, more VLANs (4094 vs 256), and more comprehensive enterprise network features. This manageable switch is therefore ideal for demanding enterprise network infrastructures requiring performance, reliability, and scalability.
🔧 How can I manage and configure this professional 3Com network switch?
The 3Com 3CR17171-91 5500-EI switch offers several management and configuration methods suited for professional environments: an intuitive web interface accessible via browser, a command-line interface (CLI) via RJ-45 console port or secure Telnet/SSH connection, SNMP protocol (v1/v2/v3) for integration into network monitoring platforms, and 3Com Switch Manager for centralized administration of multiple switches across your infrastructure. The configuration allows creating VLANs, defining QoS policies, implementing ACL security rules, configuring link aggregation, and finely managing all aspects of your Layer 2/3 enterprise network.
📊 What are the performance and switching capacity of this enterprise network switch?
The 3Com 5500-EI PWR 28-Port switch delivers excellent performance for a professional network infrastructure: maximum switching capacity of 12.8 Gbps allowing wirespeed traffic on all ports simultaneously, transfer rate of 9.5 million packets per second (Mpps) for efficient network traffic processing, latency under 10 microseconds in store-and-forward mode, support for 16,000 MAC addresses and 4,094 IEEE 802.1Q VLANs. With an MTBF reliability of 30 years (263,000 hours at 25°C), this manageable switch guarantees maximum network availability for your critical enterprise applications, data centers, network backbones, and infrastructures requiring high performance and redundancy.
🔒 What network security features are available on this manageable 3Com switch?
This 3Com 5500-EI enterprise switch includes many advanced security features: RADIUS authentication with IAS/Active Directory integration to control network access, IEEE 802.1X for user authentication at the port level, SSH v2 protocol for secure and encrypted administration connections, Access Control Lists (ACL) to filter traffic based on custom rules, Layer 2-4 packet filtering, SNMP v3 with encrypted management communications, VLAN support to logically segment your network and isolate sensitive traffic. These multi-layer security mechanisms effectively protect your network infrastructure against unauthorized access, attacks, and various threats.
💡 Do the Gigabit SFP ports accept all types of optical modules?
The 4 active Gigabit SFP ports on this 3Com 5500-EI switch support the following standard SFP modules: 1000BASE-SX for short-distance multimode fiber (3CSFP91), 1000BASE-LX for long-distance single-mode fiber (3CSFP92), 1000BASE-T for Gigabit RJ-45 copper connections (3CSFP93), and 1000BASE-Lh for very long distances (3CSFP97). These SFP ports offer great flexibility to connect the switch to your network backbone, create fiber optic inter-building links, or stack with other 5500-EI units. SFP modules are not included and must be purchased separately according to your specific network connectivity needs.
🏢 Professional Network Equipment Seller
✅ Professional equipment tested and guaranteed
✅ Fast and secure shipping with tracking
✅ Invoice with 0% VAT
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