An LED has two potential customers: the anode (optimistic) as well as cathode (unfavorable). It is important to attach the LED the best way all over inside of a circuit—LEDs are polarized components, and reversing the polarity will prevent them from Doing work. Instantaneous Cost savings is subject to availability https://www.uk-exhibitionstands.co.uk/product/pop-up-stand-3-x-4-bundle-straight/