Lenovo ThinkCentre M90s Gen 2 Hardware Maintenance Manual page 38

M90s Gen 2
1. Audio line-out connector
3. Optional connector*
5. USB 3.2 connectors Gen 1 (with smart power on)
7. Serial connector
9. PS/2 keyboard connector*
11. Padlock loop
13. PCI-Express card area
* for selected models
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M70s Gen 2 and M90s Gen 2 Hardware Maintenance Manual
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2. DisplayPort out connectors
4. USB 3.2 connectors Gen 1
6. Security-lock slot
8. PS/2 mouse connector*
10. Ethernet connector
12. E-lock slots
14. Power cord connector