Key features 20568 mbsec reading 18266 mbsec writing 2 lan with failover and link aggregation support features superspeed usb 30 cpu passive cooling technology amp system fan redundancy hot swappable hard drive design high performance amp easy to manage 4 bay all in 1 nas server for smb users specifically designed for small and medium sized businesses ds412 provides a high performance easy to manage and full featured network attached storage solution to centralize data backup pr