Lenovo ThinkCentre M720t User Manual And Hardware Maintenance Manual page 41

Figure 50. Removing the Wi-Fi card shield (type 1 and type 2)
Figure 51. Disconnecting the Wi-Fi antennas and removing the Wi-Fi card (type 1 and type 2)
Figure 52. Installing the Wi-Fi card and connecting the Wi-Fi antennas (type 1 and type 2)
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Chapter 4 Replacing hardware