The HP (JE045A) E4500-24G-PoE Switch was formerly sold as the 3Com (3CR17561-91)
See Hp cross refernece look up:
3COM corporation was acquired by HP on November 11, 20
HP E4500-24 Fast Ethernet Switch – Manageable
Lite Layer 2/3/4 Fast Ethernet switches with two dual-personality Gigabit SFP mini-GBIC ports for fiber flexibility.
Enterprise-class manageability with Command Line Interface, Web interface, and full SNMP support. Non-PoE and PoE models.
Layer 3 Lite routing-RIPv1/v2 and static routes. Eight-high stacking support with distributed link aggregation and single IP management.
Stack Port Yes
Network & Communication
Layer Supported 3
Management & Protocols
Command Line Interface