https://community.extremenetworks.com/t5/extremeswitching-exos-switch/summit-x450-latest-xos/m-p/23258#M2239 12.4.x.... Below link would help you for similar type of queries<BR /> <BR /> <U><A href="http://enterasys.wpengine.netdna-cdn.com/wp-content/uploads/2014/02/HW-SW-Compatibility-Matrix-Rev-08-March-2014.pdf" target="_blank" rel="nofollow noreferrer noopener">http://enterasys.wpengine.netdna-cdn.com/wp-content/uploads/2014/02/HW-SW-Compatibility-Matrix-Rev-0...</A></U><BR /> <BR /> Wed, 02 Apr 2014 16:59:00 GMT Sumit_Tokle 2014-04-02T16:59:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/summit-x450-latest-xos/m-p/23257#M2238 Hi there,<BR /> <BR /> can anyone tell me the exact version of the latest XOS for a SummitX450? (not X450A!)<BR /> <BR /> Thanks in advance.<BR /> Wed, 02 Apr 2014 16:54:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/summit-x450-latest-xos/m-p/23257#M2238 Christian_Haubr 2014-04-02T16:54:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/summit-x450-latest-xos/m-p/23258#M2239 12.4.x.... Below link would help you for similar type of queries<BR /> <BR /> <U><A href="http://enterasys.wpengine.netdna-cdn.com/wp-content/uploads/2014/02/HW-SW-Compatibility-Matrix-Rev-08-March-2014.pdf" target="_blank" rel="nofollow noreferrer noopener">http://enterasys.wpengine.netdna-cdn.com/wp-content/uploads/2014/02/HW-SW-Compatibility-Matrix-Rev-0...</A></U><BR /> <BR /> Wed, 02 Apr 2014 16:59:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/summit-x450-latest-xos/m-p/23258#M2239 Sumit_Tokle 2014-04-02T16:59:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/summit-x450-latest-xos/m-p/23259#M2240 Thanks for the quick reply. This Dokument is what i'm searching for in the last hour. <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span><BR /> Wed, 02 Apr 2014 17:06:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/summit-x450-latest-xos/m-p/23259#M2240 Christian_Haubr 2014-04-02T17:06:00Z