Lenovo ThinkCentre M90a User Manual

Replace a CRU
Follow the replacement procedure to replace a CRU.
Computer stand
Prerequisite
Before you start, read Appendix A “Important safety information” on page 83 and print the following
instructions.
Replacement procedure
1. Turn off the computer and remove all connected devices and cables.
2. Disconnect the computer from ac power and all connected cables.
3. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the computer cover is facing up.
4. Depending on your computer stand, refer to one of the following to replace the computer stand.
• Full-function monitor stand.
Figure 3. Removing the full-function monitor stand
48 M70a and M90a User Guide

Lenovo ThinkCentre M90a Specifications

General

Storage	Up to 2TB HDD or 1TB SSD
Processor	Up to 10th Gen Intel Core i9
Memory	Up to 64GB DDR4
Graphics	Integrated Intel UHD Graphics 630
Display	23.8-inch FHD (1920x1080) IPS
Operating System	Windows 10 Pro
Ports	HDMI, DisplayPort, Ethernet, audio jack
Audio	Integrated stereo speakers, dual array microphone
Wireless	Wi-Fi 6, Bluetooth 5.1