-	KDS  3 terminals work only 1 for Hot KDS 
-	From the beginning of start Pizza KDS shown not correct IP addresses :10.120.16.222   but when moved to port switch  38 IP got corrected  but keeping shown on and off in 2 seconds both port 37 and 38 got same problem and also switch light at port turn on and off every 2 second.
-	I checked all cable network signal from patch panel many times already that 100% pass thru complete signal and rechecked every time before starting this mission and sure that IP shown on and off not from patch panel or cable issued because I have tried directed connected pass thru from KDS to switch port directly it’s same problem that IP address shown on and off .
-	Clean up area for kitchen turn to work.
-	Today I put everything back on 
    
               KDS Cold connected to Switch  37   but inactive  RJ45  then use WiFi connected
               KDS Hot Working Perfect  Switch port 4
               KDS Pizza connected to Switch port 38 but inactive  RJ45  then use WiFi connected

              My opinion is that switch hub have something wrong .