Adding a 4TB NVMe M.2 to Z370

I've been running a Z370 Killer SLI/ac motherboard for a few years now and really like it.

Currently it has three 2.5-inch SSDs acting as drives c, d, and e. I'd like to add a new Crucial P3 Plus 4TB PCIe 4.0 NVMe M.2 to the unit, to be used as just another data-drive (for games).

Hopefully it's just plug and play using one of the M.2 sockets...but which should be used...M2_1 or M2_2?

Thanks in advance!

It's a bit too new to be shown on the manual's "approved devices" list. I just plugged it in on the #1 M.2 socket. Worked great. Perhaps can't use all the speed possible with the device; but certainly seems to be happily running.