10GbE bandwidth and M.2 SSD cache, all at once Synology E10M20-T1 helps you boost I/O performance and network bandwidth simultaneously using just one PCIe expansion slot on your Synology NAS. - Achieve Multi-Gig Ethernet transmission speeds of up to 10 Gbps. - Accelerate random I/O performance with the dual M.2 2280/22110 NVMe SSD slots. - Free up primary drive bays for data storage.