Beelink ME mini 6-Slot

grms

I’m considering to buy this device, but I have a few questions if you could help me with? Thanks in advance.

The specs lists the storage options:

M.2 2280 PCle3.0 ×1(Max 4TB)*5
Optional: No SSD/2TB1/2TB2

And the User Manual reads:

The default OS is pre-installed on the onboard eMMC. To install it on an SSD, it is recommended to use system drive 4, which runs at PCIe 3.0 ×2 speed and is compatible with SATA3 hard drives. Drives 1, 2, 3, 5, and 6 function as storage drives, operating at PCIe 3.0 ×1 speed

Does the system disk occupies one of the 6 slots?
Could Gen4 SSDs also be used?
Do they also have to be x1 lanes? Does the device support x4 lanes too?
Presuming all 6 drive bays are installed with the same spec SSDs, what RAID options are supported?

support1

Does the system disk occupies one of the 6 slots?—If you don’t install system on slot 4, then it can be used as storage .

Could Gen4 SSDs also be used?— Yes, but the speed is still PCIe3.0*2

Do they also have to be x1 lanes? Does the device support x4 lanes too?—Slot 4 supports PCIe 3.0 ×2 (for SATA3 HDDs and SSDs), while the other 5 slots are PCIe 3.0 ×1.No x4 lanes are supported by the device. The specs explicitly list PCIe 3.0 ×1 and ×2 as the maximum lane configurations

Presuming all 6 drive bays are installed with the same spec SSDs, what RAID options are supported?– It supports soft Raid