Cheap n' cheerful Keyboard. Probably naff but has bling

But says UK layout so may have bigger enter key ?

UK only £ 4.98 but has free delivery so can parcelwizard/parcelmotel/parcelconnect/AddressPal it

You should have had a leaflet that explained, all you need to do to change the colour setting is press the FN button along with any of the PRT SCR, SCR LK or PAU BRK and to change the brightness press FN along with the up or down arrows.