3Com 3CR17772-91 Switch 4500G Family Datacentre Switch

The 3Com 3CR17772-91 is a Switch 4500G PWR 48-port PoE Gigabit Ethernet switch (also sold relabelled as HP JE063A), a stackable managed switch from 3Com’s 4500G family aimed at medium business and enterprise edge deployments. It provides 48 auto-sensing 10/100/1000Base-T RJ-45 ports with Power over Ethernet on every port, giving a single switch enough PoE budget to run VoIP handsets, wireless access points and IP cameras alongside standard PCs on the same edge tier.

The 4500G family combines Layer 2 switching with dynamic Layer 3 routing, so it can handle inter-VLAN routing at the access layer rather than relying entirely on a separate core router, alongside QoS and security features aimed at converged voice/data networks. The switch supports stacking with single-IP-address management, letting several 4500G units in a wiring closet be administered as one logical switch, and optional 10-Gigabit uplink modules or XFP transceivers give it a fast path back to the core.

This is a good match for organisations running or expanding a 3Com/HP 4500G estate who need matching hardware for capacity, redundancy or PoE budget. Tech-Star (UK-based, shipped worldwide) checks every switch before it ships. Get in touch to confirm compatibility with your existing 4500G stack.