I've just received an ML30 Gen10, which turned out to have a plain DIY drive cage for 4 LFF drives. This is a little surprising for a 'server', particularly given that the vendor website showed images of a drive cage with 4 hot-plug LFF drives, and recommended the 861686-B21 hot-swap drive, which I got.
Before I send this back, can anyone tell me if I can just replace the drive cage for a 4LFF hot-swap version? The ML30 options page at HPE doesn't list a hot-swap drive cage/bay, and HPE's drive cage page shows nothing for the ML30.
I'm in the UK. The vendor has offered me £45 cash (55USD) or a £55 voucher, but it seems likely that a drive cage, if there is one, will be at least twice this. Comments welcome.