Question NVMe SSD Gen 4 NOT showing in BIOS ?

[Implicitlee]

I have a Maximus Hero XIII

In the top slot connected to the CPU I have a gen 4 500Gb 980 Pro
in the next slot down I have a gen 4 1TB 980 Pro
under that are 2 slots next to each other, in the right slot I have a gen 3 1TB 980
I have a 4 TB SSD connected by sata
I have a 4 TB HDD connectd by sata

The 1TB 980 Pro in the 2nd x4 slot is NOT showing

 

[rgd1101]

what the cpu?

latest bios?

 

[Implicitlee]

i9 11900K bios is up to date so meant to support 2 x gen 4

500gb is in m2_1
1tb 980 pro in m2_2
1tb 980 m2_4
m2_3 empty
GPU is in top slot below m2_1 and above m2_2 & m2_3/4
ssd & hdd in sata ports