I have bought a m1000e and I have received 2 PDU 30 amps 3-phase. The connection at the end is a red Mennekes 6h. The provider in the datacenter has installed 2 blues containers and 2 blue sockets 9h (from Mennekes also). He said that there is no problem to change the plug by the blue one and connect to the blue containers. He wants to remove the plug from the PDU and replaces it by the blue.
Can you confirm this? It is strange, if Dell provides me red plugs, there is some reasons. For me the red socket is for 400v and the blue is for 230V.