Cisco 3K-X 715W AC Power Supply

hello guys in this video I am unpacking a Cisco Nexus 9000 switch its elite switch for our ACI implementation and data center and what I'm going to do I have actually four four of them and I'm going to replace the power supplies and the fans in the switch and I will tell you why in a bit so these are the nexus switches cisco nexus 9000 these will be the leaf switches in our data center a CI implementation so what usually happens is one we mount the switch in the data center the cold air from the air conditioning comes in this way cooled down the system and then warm air leaves out this way and as you can see the fans here the direction of their indicates air leaving out and the power supplies indicate the model numbers - VI which means port side intake but in our implementation and the data center we have to mount this and opposite direction so the cold air will come in from the back an