Lenovo ThinkServer TD330 Manual page 46

Note: Depending on the model, your server might look slightly different from the illustrations in this topic.
Each hot-swap hard disk drive has two status LEDs on the front. Unlock and open the front door to access
the hard disk drives and view the status LEDs.
Figure 15. 3.5-inch hot-swap hard disk drive status LEDs
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ThinkServer TD330 Hardware Maintenance Manual