Maintenance and Service Guide

5. If it is necessary to replace the hard drive connector adapter, slide the adapter (3) off of the front
end of the hard drive.
Reverse this procedure to reassemble and install the hard drive.
WLAN module
Description Spare part number
Qualcomm Atheros AR9565 802.11b/g/n 1×1 WiFi + BT 4.0 Combo Adapter for use on all
computer models
733476-005
Intel Dual Band Wireless-AC 3160 802.11ac 1×1 WiFi + BT 4.0 Combo Adapter for use only on
computer models equipped with an Intel processor
710662-005
CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless
module authorized for use in the computer by the governmental agency that regulates wireless devices
in your country or region. If you replace the module and then receive a warning message, remove the
module to restore device functionality, and then contact technical support.
Before removing the WLAN module, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
WLAN module
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