Sequential throughput performance at over 226 MB/s reading and 170 MB/s writing Dual 1GbE ports with failover and Link Aggregation support 4K 10-bit H.265 video transcoding on the fly Over 40TB raw single volume capacity. Compatible Drive Type-3.5 inch SATA HDD, 2.5 inch SATA HDD, 2.5 inch SATA SSD. “Compatible drive type” indicates drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay.