Apple Macintosh Performa 577 - Manual (Page 105)

Upgrades Macintosh Processor Upgrade - 13
Note:
On a correctly
i nstalled 040 processor, a
very small gap separates the
040 chip from the metal
spacer. A larger gap caused
by the barrel sockets of the
upgrade board separates the
upgrade board and the
spacer.
Barrel
Sockets
040
Processor
Small
Gap
Spacer