"The Summit X650's ability to seamlessly integrate into our existing Summit X450 and Summit X250 stacks will make our upcoming metro fibre enhancements a much easier task."
An X650 with 24 SFP+ slots, four Gigabit SFP slots and two stack ports lists for US$21,000 (around £14,500), minus the SFP+ modules. Extreme added that a 24-port 10GBase-T version is under development, with an expected price of $25,000 (£17,300).