Synology DS1621xs+ QC2,2GhzCPU/8GbDDR4(upto32)/RAID0,1,10,5,6/upto 6hot plug HDD SATA(3,5' or 2,5')(upto16 with 2xDX517)/ 3xUSB3.0/2eSATA/2GigE+1x10GE(+1Expslot)/iSCSI/2xIPcam(upto75)/ 1xPS/5YW