Up for sale is a used Avaya Ethernet Routing Switch 4548GT-PWR, a 48-port Gigabit PoE switch designed for enterprise LAN environments requiring Power over Ethernet (VoIP phones, wireless APs, cameras, etc.) plus stacking flexibility for larger deployments.

Features & Connections:

• 48x Gigabit Ethernet PoE ports, each with Speed/PoE and Link/Act LED indicators
• 2x SFP fiber uplink slots (shared with ports 45/46 or 47/48 combo)
• Console port (DB9 serial) for CLI configuration
• Front panel: PWR, Status, RPS, Up, Down, Base status LEDs; USB port
• Rear: Cascade Up/Cascade Down ports for stacking, Unit Select (Base) switch, AC power inlet, RPS 48VDC connector for external redundant power supply
• Supports stacking with other 4500 series units for unified management
• Port area shows some residue/smudging around ports 1–12 — cosmetic, doesn't appear to affect port function
• One SFP slot (port 45/46 area) has a blue dust plug/module cap installed
• No damage to Cascade Up/Down ports or console port
• Functionality: [state clearly] — this model is from 2010; confirm whether it powers on and passes basic switching/PoE tests before listing, as buyers of Avaya/Nortel-era gear are often replacing failed units and want confidence it works
• No power cable, rack ears, or stacking cables included unless stated

Compatibility Note:
Runs Avaya ERS (Nortel-heritage) switch OS — buyers should confirm compatibility with their existing 4500-series stack or standalone deployment needs before purchase.