crwdns2894164:0crwdne2894164:0
crwdns2894186:0crwdne2894186:0

crwdns2893792:0crwdne2893792:0 mayer ,

crwdns2893800:0crwdne2893800:0:

It loos like a broken piece of the power supply pressure wall.  Apple part # 922-9281.

crwdns2892198:0crwdne2892198:0:

open