What is the maximum switching capacity and forwarding rate?

The 3Com Switch 4200G 12-Port delivers 44 Gbps maximum switching capacity with 32.7 Mpps forwarding rate. Store-and-forward switching ensures latency below 10 microseconds, enabling deterministic performance for real-time applications across all 12 ports in full-duplex mode.

Can this switch support both copper and fiber connections?

Yes. The switch includes 12 standard 10/100/1000BASE-T copper ports plus 4 dual-personality ports that operate as either RJ-45 copper or SFP Gigabit fiber. One 10-Gigabit XFP module slot enables high-speed fiber uplinks, accommodating mixed copper/fiber network architectures.

How many VLANs and MAC addresses does it support?

The switch supports 256 port-based VLANs (IEEE 802.1Q) and maintains 8,196 MAC addresses in its address table, with 1,024 static MAC addresses available. This enables comprehensive network segmentation and traffic isolation for medium-sized business deployments.

What management protocols are supported?

Management options include SNMP v1/v2c/v3, SSH v2, HTTP, and DHCP client. The switch also supports IEEE 802.1X authentication, RADIUS, ACLs, RMON, and IGMP Snooping v2, enabling centralized monitoring and secure remote administration across distributed networks.

Is this switch stackable for network expansion?

Yes. Up to 32 Switch 4200G units can be clustered in any combination using 3Com Switch Manager for virtual clustering. This enables incremental network growth without replacing core infrastructure, supporting scalable deployments in branch offices and workgroup environments.

What are the physical dimensions and power requirements?

The switch is 1U rack-mountable (44mm height × 440mm width × 274mm depth) weighing 2.3 kg. It requires AC input voltage 100–240V at 50/60 Hz with 1.5A current rating. Operating temperature range is 0–40°C, suitable for standard data center and wiring closet environments.

Does this switch support redundancy and link aggregation?

Yes. The switch supports IEEE 802.3ad Link Aggregation Control Protocol (LACP) for automated link bundling and Rapid Spanning Tree Protocol for loop prevention. These features enable redundant connections and load balancing critical for business continuity in branch office deployments.

3CR17660-91 - 3Com 3CR17660-91 Switch 4200G 12-Port Gigabit

Name: 3Com 3CR17660-91 Switch 4200G 12-Port Gigabit
Brand: 3Com
SKU: 3CR17660-91

3CR17660-91 - 3Com 3CR17660-91 Switch 4200G 12-Port Gigabit | US IT Hardware

Product overview

The 3Com Switch 4200G 12-Port (3CR17660-91) is an entry-level managed Gigabit Ethernet switch designed for medium-sized businesses and branch office networks. It features 12 auto-negotiating 10/100/1000BASE-T ports, with 4 dual-personality ports supporting either RJ-45 or SFP Gigabit connectivity. The switch includes one 10-Gigabit XFP module slot for future uplink expansion. With 44 Gbps maximum switching capacity and 32.7 Mpps forwarding rate, it delivers wirespeed performance across full mesh configurations. Layer 2 switching with Layer 3 static routing capabilities makes it ideal for wiring closet and workgroup deployments. The switch supports 8,196 MAC addresses, 256 port-based VLANs (IEEE 802.1Q), Link Aggregation, and comprehensive management via SNMP v1/v2c/v3. Operating temperature range is 0–40°C with 1.5A current rating. Stackable up to 32 units in any combination for network scalability.

44 Gbps switching capacity, 32.7 Mpps forwarding rate
12x 10/100/1000 ports + 4 dual-personality SFP ports
1x 10-Gigabit XFP uplink slot for future expansion
256 port-based VLANs, Layer 2/3 switching, LACP
SNMP v1/v2c/v3, SSH v2, HTTP management interfaces
1U rack-mountable, stackable up to 32 units

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

Compliance Certifications
Manufacturer part #	3CR17660-91
Brand	3Com
Condition	New
Model	Switch 4200G 12-Port
Product Line	Switch 4200G Gigabit Family
Product Type	Gigabit Ethernet Stackable Switch
SNMP Version	v1, v2c, v3
MAC Address Table	Supports comprehensive MAC-based features including RADA
Supported Protocols	IEEE 802.1X; RADIUS; ACLs; SSH v2; SNMP v1/v2c/v3; RMON; IGMP Snooping v2; HTTP; DHCP client
Management Interface	3Com Operating System; 3Com Switch Manager for virtual clustering

Compatible systems

No specific system or OS compatibility lists found in sources

Best for

Branch Office Networks
Provides cost-effective Gigabit connectivity for remote office deployments with 12 auto-negotiating 10/100/1000 ports and stackable architecture supporting up to 32 units for network expansion.
Workgroup Connectivity
Delivers wirespeed Layer 2/3 switching with 44 Gbps capacity and 32.7 Mpps forwarding rate, ideal for departmental LAN segments requiring managed VLAN and QoS features.
Wiring Closet Deployment
1U rack-mountable form factor with dual-personality SFP ports and 10-Gigabit uplink slot enables flexible copper and fiber connectivity in constrained spaces.
Network Uplink Consolidation
One 10-Gigabit XFP module slot supports high-speed backbone connections while 4 dual-personality ports provide flexible downlink options for mixed copper/fiber environments.
Medium-Sized Business LAN
Supports 256 port-based VLANs, IEEE 802.1Q tagging, Link Aggregation, and SNMP management for enterprise-class network segmentation and monitoring in cost-conscious deployments.

Current Rating	1.5A
Power Supplies	Fixed internal AC power supply

Dimensions	Height: 4.4 cm (1.7 in); Width: 44.2 cm (17.4 in); Depth: 30.0 cm (11.8 in)
Rack Units	1 RU
Form Factor	1U rack-mountable

Humidity	10% to 95% non-condensing (operating and storage)
Storage Temperature	-10° to 70°C (14° to 158°F)
Operating Temperature	0° to 40°C (32° to 104°F)

Ethernet Ports	12 x 10/100/1000BASE-T autosensing; 4 x dual-personality (RJ-45 or SFP)
Expansion Slots	1 x module slot for 10-Gigabit XFP

3Com 3CR17660-91 Switch 4200G 12-Port Gigabit

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