Synology NAS Network Card E10M20-T1 M.2+10 Gb 10 GbE bandwidth and M.2 SSD cache Synology E10M20-T1 helps you boost I/O performance and network bandwidth simultaneously using just one PCIe expansion slot on your Synology NAS. - Transfer data between via Ethernet at up to 10 Gb/s - Accelerate random I/O performance with the dual M.2 2280/22110 NVMe SSD slots. - Free up primary drive bays for data storage.