crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2918746:0crwdne2918746:0

crwdns2944351:0crwdnd2944351:0AirPort Extreme A1521 Logic Board Replacementcrwdnd2944351:0crwdne2944351:0

crwdns2933797:0Keith Yucrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Keith Yu

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crwdns2933771:0crwdne2933771:0
crwdns2933801:0crwdne2933801:0
Introduction
The logic board is the main feature of the device. It has all the major components for the device to function properly: USB ports, WLAN and LAN ports, and router chips. Because of the many functions the logic board performs, it requires a fan and heat sink to prevent it from overheating. This guide requires you to remove many small screws; be careful when following this guide.