I have received your message and replied you in PM.
I would delete your SN for protection.
I'm sorry that this model support 1 SSD only, up to 1TB.
I was sure under the impression the specs say there is - maybe I'm misunderstanding something. This is directly from the Asus list of specs for the this machine on their website:
Dual M.2 NVMe PCIe® 3.0 x4
512GB / 1TB / 2TB SSD (up to dual 2TB)"
Please kindly provide the SN in the PM I send you.
BTW found a great video on YouTube on disassembling the ExpertBook B9450. Anyone know the size and type of the tiny little screws so I can buy the right tool kit?
All done - thank you Blake for your thoughts - now have 2 SSDs - am looking into setting up a mirror - not as simple as I would have imagined - and not sure it's worth the effort since I do daily backups. Anyone have any thoughts?