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For controlling large networks of access points you can use AP Controller (CAPsMAN) (Controlled access point manager). All RouterOS devices can act as CAPsMAN servers, however, it is advised to use appropriate devices for the task, with higher CPU power and more RAM. All RouterOS devices with 2GHz and/or 5GHz interface and software level at least 4 can be CAP (Controlled access point) clients and connect to a CAPsMAN server. For controlling hundreds of access points, we advise using our CCR series devices. For controlling thousands of access point you might want to try using CHR in an X86 machine.