What is the switching performance of this model?

The switch delivers 128 Gbps switching capacity and 95.2 Mpps forwarding rate, ensuring wirespeed non-blocking Gigabit Ethernet performance across all ports. This supports high-density Layer 2 traffic with features like 802.1X authentication and ACLs for secure, efficient operation.

How many expansion options are available?

Two rear module slots support up to 4x 10-Gigabit XFP/SFP+ or 2x Gigabit SFP modules, plus 4x built-in dual-personality 10/100/1000 or 100/1000 SFP ports. This enables scalable uplinks to 10G core networks for growing enterprise requirements.

What power supply configurations are supported?

AC 100-240V 50/60Hz internal supply with 8.0A rating, max 87W plus 370W PoE; optional redundant -48VDC at -52 to -55V with 15.0A. This dual-option design ensures high availability in rack environments with power redundancy.

What are the physical dimensions and form factor?

Rack-mountable with 420.0 mm (16.5 in) width for PWR model, weighing 6.0 kg (13.2 lbs). Compact design fits standard 19-inch racks, ideal for space-constrained data closets in SMB and enterprise branch offices.

Does it support Layer 2 security features?

Yes, as a managed Layer 2 switch, it includes enterprise-class security like 802.1X authentication and ACLs, alongside Gigabit Ethernet standards. This protects against unauthorized access in shared networks while maintaining 128 Gbps performance.

3CRS42G-24P-91 - 3Com 4210G PWR 24-Port 24 x 10/100/1000Base-T auto-negotiating ports; 20 x PoE IEEE 802.3af; 4 x dual-personality 10/100/1000 or

Name: 3CRS42G-24P-91 - 3Com 4210G PWR 24-Port 24 x 10/100/1000Base-T auto-negotiating ports; 20 x PoE IEEE 802.3af; 4 x dual-personality 10/100/1000 or
Brand: 3Com
SKU: 3CRS42G-24P-91

3CRS42G-24P-91 - 3Com 4210G PWR 24-Port 24 x 10/100/1000Base-T auto-negotiating ports; 20 x PoE IEEE 802.3af; 4 x dual-personality 10/100/1000 or | US IT Hardware

Product overview

The 3Com Switch 4210G PWR 24-Port (SKU 3CRS42G-24P-91) is an enterprise-grade Layer 2 managed Gigabit Ethernet switch from the 4210G family. It features 24 auto-negotiating 10/100/1000Base-T ports with PoE IEEE 802.3af support on 20 ports and a 370W PoE budget at 15.4W per port. Four ports are dual-personality supporting 10/100/1000 or 100/1000 SFP for flexible connectivity. Two rear expansion slots accommodate up to 4x 10-Gigabit XFP/SFP+ or 2x Gigabit SFP modules, enabling high-speed uplinks. With 128 Gbps switching capacity and 95.2 Mpps forwarding rate, it ensures wirespeed performance. Power options include AC 100-240V internal supply with optional redundant -48VDC, max 87W plus 370W PoE. Rack-mountable at 420mm width and 6.0 kg, it supports enterprise security like 802.1X and ACLs. Compliant with RoHS and WEEE, it's suited for SMBs and branches needing PoE for IP phones, cameras, and access points.

24x Gigabit PoE ports, 370W budget for devices
128 Gbps capacity, 95.2 Mpps forwarding rate
4x dual SFP ports + 2 slots for 10G expansion
Layer 2 managed with 802.1X, ACL security
AC/DC power, redundant -48VDC option
Rack-mount 420mm W, 6kg for enterprise racks

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 #	3CRS42G-24P-91
Brand	3Com
Condition	New
Model	4210G PWR 24-Port
Product Line	4210G Gigabit Family
Product Type	Managed Gigabit Ethernet Switch with PoE
Ethernet Speed	Gigabit Ethernet 10/100/1000Base-T and 1000Base-X
Supported Layer Standard	Layer 2 with enterprise-class security features including 802.1X and ACLs
Compliance Certifications	RoHS; WEEE

Network & Communication

Compatible systems

No specific compatibility lists found in sources

Best for

Enterprise Branch Networking
Provides 24x Gigabit PoE ports with 370W budget for powering IP phones and access points, plus 128 Gbps capacity for high-performance Layer 2 switching with 802.1X security.
PoE Device Deployment
Supports IEEE 802.3af PoE on 20 ports at 15.4W each, ideal for VoIP phones, wireless APs, and cameras in office environments with rack-mount form factor.
High-Speed Uplink Expansion
Two slots for up to 4x 10G XFP/SFP+ modules enable scalable aggregation to core networks, with 95.2 Mpps forwarding for low-latency traffic.
SMB Data Center Edge
Rack-mountable design with dual-personality SFP ports and Gigabit Ethernet ensures flexible connectivity for servers and storage in space-constrained setups.

Frequently asked questions

What PoE capabilities does the 3Com 4210G PWR 24-Port offer?

Details

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Forwarding Rate	95.2 Mpps

Switching Capacity	128 Gbps

Power Consumption

Max Wattage	87W plus up to 370W PoE
Voltage Input	AC 100-240V 50/60Hz; DC -52 to -55V
Current Rating	AC 8.0A; DC 15.0A
Power Supplies	AC internal; optional redundant -48VDC supplemental; 370W PoE budget at 15.4W per port

Weight	6.0 kg (13.2 lbs)
Dimensions	420.0 mm width (16.5 in) for PWR model
Form Factor	Rack-mountable

Interface/Ports

Ethernet Ports	24 x 10/100/1000Base-T auto-negotiating ports; 20 x PoE IEEE 802.3af; 4 x dual-personality 10/100/1000 or 100/1000 SFP
Expansion Slots	2 rear module slots supporting up to 4 x 10-Gigabit (XFP/SFP+) or 2 x Gigabit SFP

3Com 4210G PWR 24-Port 24 x 10/100/1000Base-T auto-negotiating ports; 20 x PoE IEEE 802.3af; 4 x dual-personality 10/100/1000 or