Hello drlinux64,   You would not be able to connect an MD1400 to a ME4024.  Basically the issue is that they use 2 different softwares that are not compatible.   Here is the support matrix that shows the ME4 Series supported expansion enclosures: [URL]  
Hello all, I have question about unsupported configuration. For example can PowerVault  MD1400 be connected to PowerVault ME4024 or ME424? Should this configuration work theoretically or there could be some software limitation? I can't find any information about this kind of backward compatibility between new and old generation PowerVault storage. I guess that this configuration will not acceptable by Dell despite both devices have active ProSupport. Any info will be appreciated.
Can I connect PowerVault MD1400 to PowerVault ME4024 or ME424?