Do I have to label a non-confidential computer with confidential qualifications?

Need. In the security work, in order to ensure the security and confidentiality of confidential information, it is necessary to manage and control the equipment that processes information, and the non-confidential computers need to be marked accordingly, so as to clearly distinguish the equipment that processes non-confidential information from confidential information in the workplace and remind relevant personnel to abide by the confidentiality provisions.