Rear Wi-Fi Antenna - Lenovo ThinkCentre M75n Hardware Maintenance Manual

6. Install a new I/O box. Then, install the USB-C adapter.
7. Turn over the computer and the I/O box together so that the computer is on top.
8. Reinstall all removed parts, if any. Then, reconnect the power cord and all disconnected cables to the
computer and the I/O box.

Rear Wi-Fi antenna

Note: The rear Wi-Fi antenna is available only on some models.
Prerequisite
Before you start, read Chapter 1 "Important safety information" on page 1 and print the following
instructions.
Avoid contact with the hot computer. During operation, the computer becomes hot enough to burn the skin.
Before you touch the computer, turn off the computer, disconnect power, and wait approximately 30 minutes
for the computer to cool.
Replacement procedure
1. Remove any media from the drives and turn off all connected devices and the computer.
2. Disconnect the power cord from the electrical outlet and disconnect all cables from the computer.
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ThinkCentre M75nHardware Maintenance Manual