Hi, I am a user of Optiplex 7050 SFF (Small Form Factor)
I'd like to update DDR4 RAM and storage.

1. What is the maximum RAM clock speed should be used that is going to be compatible with the PC, especially motherboard and CPU?
Is it 2400 MHz? can't I use 3200 MHz?
2. Current the PC has 8 GB (4GB x 2 EA), and is it ok If I add 32 GB more (16 GB x 2 EA)?
3. In addition, Can I additionally use NVMe SSD as second drive?
Is the motherboard has enough cable and slot to support it or do I have to just use one drive?

I'm looking forward to receiving your reply soon.

Best Regards,