Hirschmann's Gigabit Ethernet Backbone Layer-2 switch supports up to 88 ports, including 80x GE and 8x 1/2.5/10 GE SFP+ ports. The basic unit features 8 fixed ports and an additional 32x FE/GE TX ports. It is modular, allowing for expansion with four media module slots, each supporting 12 FE/GE ports, totaling 48x FE/GE expandable ports.