Hello, you can refer here: https://wiki.geekworm.com/How_to_Configure_RAID_Setting

Disconnect power supply, and choose your Raid setting, insert or remove jumper by the following jumper instruction:

For RAID0 setting, Both A and B jumpers need to be shorted For RAID1 setting, Only the B jumper needs to be shorted For PM setting, No jumpers need to be shorted

How to Configure RAID
How to Configure RAID