The Summit X450 series switches are 24-port switches without PoE options.
The ports are implemented as fixed 10/100/1000BASE-t RJ45 ports or as installable SFP modules. These switches are available only with AC internal power supplies.
Summit X450-24t switches require an ExtremeXOS version of at least 11.2.2.4 but not greater than 12.4.x. Summit X450-24x switches require an ExtremeXOS version of at least 11.6.1.9 but not greater than 12.4.x.