Cisco stopped selling them all: https://www.cisco.com/c/en/us/obsolete/switches/cisco-catalyst-6509-switch.html https://www.cisco.com/c/en/us/obsolete/switches/

Cisco stopped selling them all: https://www.cisco.com/c/en/us/obsolete/switches/cisco-catalyst-6509-switch.html https://www.cisco.com/c/en/us/obsolete/switches/cisco-cataly... and https://www.cisco.com/c/en/us/support/switches/catalyst-6500-series-switches/series.html https://www.cisco.com/c/en/us/support/switches/catalyst-6500... (2006 and 2020 respectively). The post is the "onion".