Technical information
 Take Apart Version 2, 400 MHz Logic Board (June 2001) - 2
Version 2, 400 MHz 
Logic Board (June 
2001)
There is a Version 2, 400 
MHz logic board for the iMac 
(Early 2001), 661-2509. 
It is 
not 
backward 
compatible with the earlier 
400 MHz board (661-
2427). Exchange like-for-
like. Refer to Kbase article 
58788 for information on 
the iMac logic boards.
The bar code on the Ver. 2 
board reads: “400 MHz, 
P52A”.










