Wiring an IR blaster+receiver board I've salvaged this small IR blaster+receiver board from an old computer toy:




As you can see the board was connected to the main unit via a 4-wire cable labelled like this:


LED (yellow) (I guess this is the IR LED/blaster)
IR (white) (I guess this is the IR receiver)
VCC (red)
GND (black)


I'd like to use this board with an Arduino library like IRremote, but I am not sure about the VCC voltage and whether I need to add more components on the Arduino side.

UPDATE:
I've checked the LED with a multimeter and indeed it is a visible bicolor LED, so there is no IR blaster in this board. At this point, is there any good reason to keep the IR receiver on the board rather than just cutting it and reusing as a standalone component?
You solved your problem.

You said 


  I checked the LED with a multimeter and indeed it is a visible bicolor
  LED, so there is no IR blaster in this board.


So, be kind, accept this answer so we can close your question.

I'm posting, not comment, only to get this out of the "unanswered".