iMac crystal oscillator identification

[jason9v]

Hello,

I am making a presentation about the use of crystal oscillators in computers. There is an image of the motherboard of an iMac (late 2009 model, 21.5"), you can see it here:

**broken link removed**

and here:

**broken link removed** (please ignore the red rectangle)

The oval-ish shaped, raised, silver colored component on the lower right of the images looks like an oscillator to me.

If that is indeed the oscillator, I was wondering if anyone can tell me specifically which oscillator it is? I would like to know the part number if possible (could it possibly be the HC-49?).

You can see more pictures of the iMac here:

KODAWARISAN?????????? (New iMac)?KODAWARISAN Mac?????????????????

Thank you to anyone who knows this.....

Jason

 

[MikeMl]

I would call that a crystal; not an oscillator.

 

[Diver300]

It is a surface mount version of an HC49/4H. It's a crystal.

The 4H represents the low height, as HC49 crystals are about 11 mm tall. The frequency is likely to be in the 8 - 30 MHz range, and will probably be engraved on the top of it.