["For Quad and Penta SATA HAT The TOP board was developed to monitor the SSDs/HDDs and to display some basic information about the NAS. It provides PWM fan control, IP address information and other details via the implemented OLED display and a button to select and turn off the device. If desired, this button can also be assigned your own functions. A ribbon cable (not included) connects the SATA HAT to the top board. Product content", "SATA HAS top board"]