The Nortel Ethernet Switch 425 is available in two models - the Nortel Ethernet Switch 425-24T and the Nortel Ethernet Switch 425-48T.

The Ethernet Switch 425-24T has 24 10BASE-T/100BASE-TX auto-sensing ports, 2 flexible combo uplink ports, and built-in stacking ports. It can be used standalone or in a stack of up to 8 switches to get up to 192 10/100 Mbps ports, that can be easily managed as a single unit. The Ethernet Switch 425-48T can also be used standalone or in a stack of up to 8 switches for up to 384 10/100 Mbps ports.

• Cost-effective 10/100 Layer 2 Ethernet switch provides 24 or 48 10BASE-T/100BASE-TX autosensing ports, 2 flexible combo uplink ports, and built-in stacking ports that reduce cost by eliminating the need to purchase cascade modules.
• A scalable, stackable architecture enables up to 8 switches to be connected to support up to 384 ports.
• Two flexible combo uplink ports for high-speed connectivity to wiring closet or backbone devices.
• Wire-speed performance is delivered by a 16 Gigabit per second (Gbps) switch fabric that supports full frame forwarding and filtering across all ports at wirespeed performance.
• Ethernet Switch Software is a single software image that is used for Ethernet Switches 425-24T, 420-24T, and 425-48T. Future versions provide new features and will be available for free for the lifetime of the switches.