Bought a box solidrun model14x40300-d

The box powers on as i can see the red light in the digital audio port is red.I powered it back on and connected a usb to it to see if the usb light flickers) t osimulate a boot…nothing no lights.
Connected hdmi and no display comes up.Did i buy a broken box or is there way to reset it or run a image from a flash drive or must it contain a sd card in with boot files.
Where could i download this boot files and load it.I am lost as i dont know this product.
Please can someone point me in the right direction t ojust let it at least boot tp some form of a screen.The power adaptoe has got 3amps at 5 volts.
The other thing i notices is that some boxes display a red light in fromt.i do not have this red small light

which firmware image are you using to boot it? That model needs the bootloader on the uSDHC card to boot.