This RAID hard drive enclosure from JEYI uses the JMS568R main control chip and supports a maximum transfer rate of 20G. It has a maximum single-drive capacity of 4TB and can accommodate two M.2 NVMe hard drives, supporting a maximum disk array capacity of 8TB.How to Set Up the JEYI 586R Hardware RAID Enclousre-Support 2-bay PCle Gen3x2 NVMe with RAID0/1/JBOD/PM-Support FS/HS/SS/SS+ USB operation andup to fast Speed USB 20Gbps-Support USB Bulk Only Transfer (BOT) andUSB Attached SCSI protocol (UASP)-Support PCle Gen 3x2, max. bandwidth up to 16Gb/s-Support PWM internal fan control1x JEYI 586R SSD Enclosure