Atop Technology SW550X User manual - Manual (Page 103)

Atop Industrial Wireless Serial Device Server Series
SW550X
User Manual V 1.1
97
Fig. 5. 14
If the exclamation mark begins with Server requires username/password login Fig. 5. 14, it
means VCOM Authentication in the serial device server is enabled, but credentials in the
Serial/IP is not enabled.