Hmmm...this IS weird. The listing is apparently from 4ms themselves, as it has their manufacturer lock on it and shows it as available, but 4ms's site doesn't list it, nor do my usual 'go-to' retailers.

My suggestion: Ladik's A-545 input and A-540 output. 2 hp more, but it splits up your input and output for a bit better cable routing, and has pretty much the same functionality. The Happy Nerding Isolator (also 4 hp) might also be suitable for the output module as well.