The MikroTik S+AO0005 is a 5m SFP+ 10Gbps Active Optics direct attach cable.
This is a highly cost-effective way to connect two SFP/SFP+ devices for very short distances, within racks and across adjacent racks. It works with all MikroTik products with SFP/SFP+ ports, including the new RB4011 series (RB4011 series are not compatible with our passive direct attach cables S+DA0001 and S+DA0003)
SFP Compatibility List Here. https://wiki.mikrotik.com/wiki/MikroTik_SFP_module_compatibility_table
Compatible with RB4011 Series Routers