Difference between P090A and P090D?

We’ve currently got an AC200Max and a B230 expansion battery linked together. I want to add a B300K to this, but our local stockist only has the “B300K2” package(that’s how they’ve got it labelled) that comes with the short CA90, but can also bundle the P090D with our order.

Our existing expansion battery uses the P090A, so how is the P090D different, and can it be used to hook up the B300K to our system? The Bluetti sales site just doesn’t seem to have any info on this.