Lenovo ThinkCentre M720t User Manual

Contents
Chapter 1. Overview . . . . . . . . . . . 1
Front view . . . . . . . . . . . . . . . . . . 1
Rear view . . . . . . . . . . . . . . . . . . 3
System board . . . . . . . . . . . . . . . . 5
Machine type and model label . . . . . . . . . . 6
Chapter 2. Specifications . . . . . . . . 7
Chapter 3. Computer locks . . . . . . . 9
Locking the computer cover . . . . . . . . . . . 9
Enabling or disabling the E-lock . . . . . . . . . 9
Attaching a Kensington-style cable lock . . . . . 10
Attaching a smart cable clip . . . . . . . . . . 10
Chapter 4. Replacing hardware . . . . 13
Before replacing hardware . . . . . . . . . . 13
Knowing FRUs (including CRUs) . . . . . . . . 13
Locating FRUs (including CRUs) . . . . . . . . 14
Replacing the keyboard or wireless keyboard . . . 16
Replacing the mouse or wireless mouse . . . . . 17
Replacing the power cord . . . . . . . . . . . 21
Replacing the dust shield . . . . . . . . . . . 22
Removing the computer cover . . . . . . . . . 23
Replacing the front bezel . . . . . . . . . . . 23
Replacing the optical drive . . . . . . . . . . 24
Replacing the optical drive bracket . . . . . . . 25
Replacing the storage drive . . . . . . . . . . 26
Replacing a memory module. . . . . . . . . . 31
Replacing a PCI Express card . . . . . . . . . 34
Replacing the Wi-Fi card . . . . . . . . . . . 36
Replacing the M.2 solid-state drive . . . . . . . 38
Replacing the M.2 solid-state drive bracket . . . . 45
Replacing the power supply assembly . . . . . . 46
Replacing the Wi-Fi antennas . . . . . . . . . 48
Replacing the internal speaker . . . . . . . . . 51
Replacing the front fan . . . . . . . . . . . . 53
Replacing the illuminated red dot cable . . . . . 55
Replacing the thermal sensor . . . . . . . . . 57
Replacing the front I/O bracket . . . . . . . . . 58
Replacing the power button . . . . . . . . . . 60
Replacing the card reader board . . . . . . . . 61
Replacing the heat sink and fan assembly . . . . 62
Replacing the microprocessor . . . . . . . . . 64
Replacing the coin-cell battery . . . . . . . . . 67
Replacing the E-lock . . . . . . . . . . . . . 69
Replacing the cover presence switch . . . . . . 70
Replacing the rear fan . . . . . . . . . . . . 72
Replacing the system board . . . . . . . . . . 73
Completing the parts replacement . . . . . . . 74
Appendix A. Notices . . . . . . . . . . 77
Appendix B. Trademarks . . . . . . . 79
© Copyright Lenovo 2018 i

Lenovo ThinkCentre M720t Specifications

General

Memory	Up to 64 GB DDR4
Operating System	Windows 10 Pro
Processor	Up to 9th Gen Intel Core i7
Storage	Up to 1TB SSD
Graphics	Intel UHD Graphics 630
Ports	USB 3.1 Gen 1, USB 3.1 Gen 2, USB-C, DisplayPort, Ethernet, audio
Weight	7.4 kg
Expansion Slots	1 x PCIe x16, 1 x PCIe x1, 1 x PCI, 2 x M.2