Q. Why my paypal can't pay

1. Get the HUB name or define from the LED display supplier. 2. From the back of the display module to see if there is a HUB card’s name or HUB definition
3. If it is an old display, you can also get the older HUB from the receiver card 4. If you really can’t be sure Which the HUB card would your needs,

you can take a clear picture of the back of a module and a receiver card photo to us, and then our technician Will help you out.