Zk5kx Manual ((link))

This is a bit of a tricky one because the ZK-5KX (a popular, low-cost CNC buck-boost converter module) is famous for arriving in a box with either no instructions or a very tiny, poorly translated manual.

5. User Management (Enrolling Users)

You must enroll users before they can verify their identity. zk5kx manual

• IP Address: e.g., 192.168.1.100
• Subnet Mask: 255.255.255.0
• Gateway: 192.168.1.1
• DNS: 8.8.8.8

Because "zk5kx" does not correspond to a widely recognized commercial product, consumer electronic device, or industrial machine in public databases, it is likely one of the following: This is a bit of a tricky one