Compre una tarjeta para imac k3000 de 2 gb y al instalarla el iMac prende un led y al dejarla un rato arranca pero sin el display y me da video exter

[Fauro18]

Hola a todos compre una tarjeta k3000 de 2 gb y solo enciende el primer led y al dejarla un rato enciende sin el display y me da video externobpero no se que hacer con la usb que me enviaron en la compra

 

[dudax]

Hola.

 

[HDFan]

Hello everyone, I bought a 2 gb k3000 card and it only turns on the first LED and when I leave it for a while it turns on without the display and gives me external video but I don't know what to do with the USB that they sent me in the purchase

You are putting this into a Mac? if so which one? As for the USB what does the bill of materials say?