Description

The HP (JE105A) was formerly sold as the 3Com (3CR17171-91) 5500-EI PWR 28-Port Switch
The JE105A 5500-EI PWR and 3CR17171-91 are the same product

See Hp cross refernece look up:
http://pro-networking-h17007.external.hp.com/us/en/support/converter/index.aspx
3COM corporation was aquired by HP on November 11, 2009

Product name: HP E5500-24-PoE Switch
Product number: JE105A
Product type: Fixed Port L3 Managed Ethernet Switches
Product series: HP E5500 Switch Series
Warranty duration: Limited Lifetime† – Next Business Day
Marketing Information
The HP/3Com E5500-24-PoE Switch is a premium stackable 10/100 switch with Enhanced Image (EI) software for businesses running the most demanding network applications requiring the highest (five 9s) network uptime.
Twenty four 24-ports operate at 10/100 while four additional SFP-based ports operate at Gigabit speeds.
The 10/100 ports also provide Power over Ethernet (PoE), for distribution of power to other devices over the same cabling used for data.
Product Type Layer 3 Switch
Interfaces/Ports
Stack Port Yes
Port/Expansion Slot Details 4 x Gigabit Ethernet Expansion Slot
I/O Expansions
Number of Total Expansion Slots 4
Expansion Slot Type SFP
Number of SFP Slots 4
Network & Communication
Layer Supported 3
Management & Protocols
Manageable Yes
Management
CLI
SNMP
Web interface
Power Description
PoE (RJ-45) Port Yes