What ports does the 3Com SuperStack 3 Switch 4900 have?

It features 12 auto-negotiating 100BASE-TX/1000BASE-T ports with RJ-45 connectors and Auto-MDIX, plus one expansion slot for optional 4-port Gigabit modules (SX, LX, 1000BASE-T, or GBIC). Supports Cat5 cabling up to 100m with full-duplex Gigabit operation.

What is the switching performance?

Provides 24 Gbps non-blocking switching capacity and 23 million packets per second throughput. Uses store-and-forward mode with dynamic MAC learning for up to 12,000 addresses and full-duplex flow control to prevent packet loss.

Does it support VLANs and QoS?

Yes, includes 802.1Q VLAN support for network segmentation and advanced QoS with four queues per port, 802.1p priority, and multilayer classification. Enables prioritization of critical traffic and Layer 3 IP routing.

What management options are available?

Managed via included 3Com Network Supervisor for discovery/mapping/monitoring, plus web interface and CLI. Supports SNMP, TCP/IP, ARP, TFTP, and MIBs like RMON (RFC 1757) and Interface MIB (RFC 2233).

What are the power and environmental specs?

Single AC 90-240 VAC/50-60 Hz supply, 50W max (168 BTU/hr), 4.5A rating, with optional redundant power socket. Operates 0-40°C, 10-90% humidity; stores -40 to 70°C. MTBF 326,000 hours at 40°C.

What is the physical form factor?

1U rack-mountable (19-inch) or standalone, dimensions 44 cm W x 37 cm D x 6.6 cm H, weight 6.5 kg. Includes status LEDs for power, traffic/duplex, and per-port link/speed.

3C17700 - 3Com 3C17700 SuperStack 3 Switch 4900 12x Gigabit Copper L2/3

Name: 3Com 3C17700 SuperStack 3 Switch 4900 12x Gigabit Copper L2/3
Brand: 3Com
SKU: 3C17700

3C17700 - 3Com 3C17700 SuperStack 3 Switch 4900 12x Gigabit Copper L2/3 | US IT Hardware

Product overview

The 3Com SuperStack 3 Switch 4900 (SKU 3C17700) is a managed Layer 2/3 Gigabit Ethernet switch designed for enterprise networks requiring wirespeed, non-blocking performance. It features 12 auto-negotiating 100BASE-TX/1000BASE-T ports with Auto-MDIX and one expansion slot for optional Gigabit modules (SX, LX, 1000BASE-T, or GBIC). Delivering 24 Gbps switching capacity and 23 million packets per second throughput, it supports dynamic MAC address learning, 802.1Q VLANs, advanced QoS with four queues per port and 802.1p priority, plus full-duplex flow control. Management options include 3Com Network Supervisor, web interface, and CLI, with protocols like SNMP, TCP/IP, and MIBs for RMON and interfaces. Power consumption is 50W max (168 BTU/hr) from 90-240 VAC, in a 1U rack-mountable form factor (44x37x6.6 cm, 6.5 kg). Operating range is 0-40°C and 10-90% humidity, with MTBF of 326,000 hours. Compliance includes FCC Class A and UL 1950.

12x auto-negotiating 100/1000BASE-T ports w/ Auto-MDIX
24 Gbps switching capacity, 23 Mpps throughput
802.1Q VLANs & QoS w/ 4 queues/port, 802.1p priority
Expansion slot for 4-port Gigabit SX/LX/T/GBIC modules
Full-duplex flow control & dynamic MAC learning
3Com Network Supervisor, web/CLI management

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

VLAN Support
Manufacturer part #	3C17700
Brand	3Com
Condition	New
Model	Switch 4900
Technology	Wirespeed, non-blocking Gigabit Ethernet switching
MIB Support	Remote Monitoring MIB (RFC 1757); Interface MIB (RFC 2233); MAU MIB (RFC 2668)
EMC Immunity	EN55024
Flow Control	Full duplex mode with flow control to minimize packet loss during congestion
Product Line	SuperStack 3 Switch 4900 Series
Product Type	Managed Layer 2/3 Gigabit Ethernet Switch

Compatible systems

3C17700 is a standalone managed Gigabit switch compatible with SuperStack 3 series stacking architecture; supports standard Ethernet devices and management platforms via SNMP

3Com SuperStack 3 Switch 4900 Series
Model: Switch 4924 (3C17701); Switch 4950 (3C17706)
Form factor: Rack-mount 1U
Generation: SuperStack 3
Can be stacked with other Switch 4900 series units using optional stacking modules

Best for

Enterprise Workgroups
Supports high-performance Gigabit switching for bandwidth-intensive teams with 12 auto-negotiating 100/1000BASE-T ports and 24 Gbps capacity, enabling wirespeed non-blocking performance.
Server Farms
Provides Layer 2/3 features like VLAN segmentation, QoS with four queues per port, and flow control to prioritize critical traffic and minimize packet loss in server environments.
Data Center Wiring Closets
Rack-mountable 1U design with expansion slot for fiber/copper modules offers flexibility for mixed media Gigabit backbones, with robust management via Network Supervisor.
Growing SMB Networks
Delivers 23 Mpps throughput and advanced CoS for small-to-medium networks scaling to Gigabit, including link aggregation and Rapid Spanning Tree for high availability.

Details

Shipping, warranty & returns

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MAC Address Table	Supports dynamic MAC address learning and filtering

Quality of Service	Advanced Class of Service with four queues per port; 802.1p priority support; multilayer packet classification

Management Software	3Com Network Supervisor (included on CD); provides discovery, mapping, monitoring, and alerting

Supported Protocols	SNMP; UDP (RFC 768); IP (RFC 791); ICMP (RFC 792); TCP (RFC 793); ARP (RFC 826); TFTP (RFC 783)

Management Interface	3Com Network Supervisor application (included); Web interface; Command line interface (CLI)

Compliance Certifications	FCC Part 15 Class A; CE Mark; UL 1950; CSA; VCCI Class A; CNS 13438 Class A

Throughput	23 million packets per second
Switching Capacity	24 Gbps

Power Consumption

Max Wattage	50 W maximum
Voltage Input	90-240 VAC; 50/60 Hz
Current Rating	4.5A maximum
Power Supplies	Single AC power supply; optional redundant power system socket available
Heat Dissipation	168 BTU/hr maximum

Physical Characteristics

Depth	37 cm (14.5 in)
Width	44 cm (17.3 in)
Height	6.6 cm (2.6 in)
Weight	6.5 kg (13 lb)
Form Factor	Rack-mountable; 1U height
Status LEDs	Power indicator; Network traffic/Duplex mode indicator; Link status/Speed indicator per port
Mounting Type	19-inch rack mount or desktop standalone

Operating Humidity	10% to 90% relative humidity (non-condensing)
Storage Temperature	-40° to +70°C (-40° to +158°F)
Operating Temperature	0° to 40°C (32° to 104°F)

Interface/Ports

Network Ports	12 auto-negotiating 100BASE-TX/1000BASE-T ports configured as Auto-MDIX (RJ-45 connectors)
Expansion Module Slot	1 slot supporting optional Gigabit switching modules (4-port SX, LX, 1000BASE-T, or GBIC)

3Com 3C17700 SuperStack 3 Switch 4900 12x Gigabit Copper L2/3