I would still push the support engineer to escalate internally. This is too big of an issue to just leave it alone. I'm also curious what the technical reason would be since those switches still are regular C9300L's. As an engineer for an MSP I'm always looking for detailed information. I also recently had to ask the question about cross compatibility between BXD SFP's and C9300-M and regular MS switches.  Luckily I got an answer there before committing to a buy. I do feel your pain, damn... ... View more