The HP 4500-48-PoE Switch (JE048A) was formerly sold as the 3Com (3CR17572-91) 4500 PWR 50-port
This is the same product: See Hp cross refernece look up
Product name: HP 4500-48-PoE Switch
Product number: JE048A
Product type: Fixed Port L3 Managed Ethernet Switches
Product series: HP 4500 Switch Series
Warranty duration: Limited Lifetime† – Next Business Day with HP
The HP/3Com Switch 4500-48-PWR stackable Ethernet switch features rich Layer 2 switching and dynamic Layer 3 routing in a cost-effective, high performance platform.
With robust security, extensive management, traffic prioritization and quality of service features.
Total Number of Network Ports 48
Uplink Port Yes
Stack Port Yes
Number of Network (RJ-45) Ports 48
Port/Expansion Slot Details 2 x Gigabit Ethernet Expansion Slot
Port/Expansion Slot Details 2 x Gigabit Ethernet Uplink
Port/Expansion Slot Details 48 x Fast Ethernet Network
Media & Performance
Media Type Supported Twisted Pair
Ethernet Technology Fast Ethernet
Network Technology 10/100/1000Base-T
Number of Total Expansion Slots 2
Expansion Slot Type SFP
Number of SFP Slots 2
Network & Communication
Layer Supported 3
Management & Protocols
802.1Q Port-based VLANs
CLI via the console port or Telnet, embedded web management interface
3Com management: 3Com Network Supervisor, 3Com Network Director, 3Com Enterprise Management Suite
Dynamic Voice over IP:
Unique Voice VLAN feature detects the presence of IP phones and dynamically assigns switch ports to the Voice VLAN, enabling automated configuration and prioritization of VoIP traffic.
This powerful feature minimizes cost and complexity associated with adding or moving IP phones.
Prioritization and Bandwidth Management:
Eight priority queues per port enable 802.1p Class of Service / Quality of Service (CoS/QoS)
Input Voltage 110 V AC
Input Voltage 220 V AC
Power Source Power Supply
Redundant Power Supply Yes
Form Factor Desktop
Form Factor Rack-mountable
Weight (Approximate) 7.28 lb
Power over Ethernet (PoE):
Provide inline power to attached devices via industry-standard 802.3af Power over Ethernet (PoE).
The internal power supply provides a power budget of 300 Watts, which is dynamically allocated to PoE ports.
Supplemental power can be provided by an optional external DC power system, supplying up to 15.4 Watts of power to all PoE ports in a switch or stack.
802.1X network access control
MD5 cipher-text authentication and clear-text authentication for RIP v2 packets and SNMP v3 traffic
RADIUS authentication ensures secure access to resources. Additionally, RADIUS Authenticated Device Access (RADA) enables authentication of attached devices via MAC address.
Port-based Access Control Lists (ACLs)
Secure Shell (SSHv2) and SNMPv3 support ensure secure management access to switches via authentication and encryption of management traffic.
Certifications & Standards
CISPR 22 Class A
FCC Part 15 Class A
EN 55022 1998 Class A
ICES-003 Class A
VCCI Class A
EN 61000-3-2 2000, 61000-3-3
Safety agency certifications:
CAN/CSA-C22.2, No. 60950-1-03