Complex sentence: PowerConnect 5500 series are based on Marvell technology.The 5500 series switches are the successor of the 5400 series: they offer 24 or 48 gigabit ethernet ports with (- P series) or without PoE.
Split into simpler sentences: PowerConnect 5500 series switches, the successor of the 5400 series, are based on Marvell technology. They offer 24 or 48 Gigabit Ethernet ports with (- P series) or without PoE.