SE528 only support NVMe based M.2 2280 SSD (20x80mm), doesn't support SATA based M.2 SSD (B Key or B+M Key) and AHCI PCIe based M.2 SSD (M Key)
SE528 only can reach data transfer rate up to 20Gbps when a high performance NVMe M.2 SSD installed and connecting to PC with USB 3.2 Gen 2x2 host port. Otherwise, speed will be limited to 5Gbps or 10Gbps according max speed support of SSD and USB port on PC. You can add a USB 3.2 Gen 2x2 PCI-E expansion card if your PC doesn't support USB 3.2 Gen 2x2.