HP ZBook Studio G4 Mobile Workstation Storage Expansion

[DigitalH]

Just bought this used in mint condition. Looks like storage aplenty on it. I currently have the primary drive on a 1TB M2 NVMe stick, with a second 1TB SATA SSD (dedicated for games). I know there is a second slot for another M2. Are there any limitations I should know about before attempting to fill that second M2 slot with another 1TB stick? (Do I need to RAID the two?) TIA!

Ed

[Huffer]

Here is the Service Manual:

Manual

Have you taken off the back cover? Because the only storage on these is connected by two M.2 slots. 

See p. 31 of the Manual. The second M.2 slot is at right angles to the first slot and is not accessible except if you have the smaller battery. 

So if you already have 2 drives the 2 M.2 slots are already filled. Are you sure you have the G4 model and not the G3 model?

[DigitalH]

Thanks for responding, Huffer. I think my G4 (confirmed model) may have a different configuration than what is shown in the manual (or what you have seen?). I have since filled that empty bay with another SATA HDD. I am still wondering where the other PCIe M2 might go though. Actually, I am not entirely sure there IS another port for a second PCIe... Anyway, whether it's there or not, I plan to use the spare stick as a cloned backup (not to install now), once I have the primary M2 fully configured. Thanks.

Ed