The front panel of the Lenovo Iomega StorCenter ix4-300d 4-bay NAS features a status screen, control buttons, connectivity ports, and LED indicators:
LCD Display: A status screen that lets you scroll through and view the device name, free disk space, IP address, and system settings.
Display Control Buttons: Physical buttons next to the screen used to navigate and control the functions shown on the LCD display.
Power Button: Turns the unit on and off.
USB 3.0 Port: A front-facing USB 3.0 port for connecting external storage devices or drives.
Boots up but cannot find hard drives which Lenovo requires the unit to be reflashed (instructions readily available)