Licson Lee says to YSITD https://www.ebay.com/itm/Cisco-Catalyst-WS-C6504-E-VS-S720-10G-WS-X6724-SFP-2x-PWR-2700-AC-4/273157389963?epid=74096166&hash=item3f9972fe8b:g:PIMAAOSw0NJaheOK&thm=10