Dell E30S Series

Front panel features of 4 x 3.5-inch cabled hard drive chassis
Figure 5. Front panel features and indicators- 4 x 3.5 inch cabled hard-drive chassis
1. Power button
2. NMI button
3. System identification button
4. Information tag
5. Diagnostic indicators
6. USB ports
7. Optical drive or tape-drive bay
16 Dell PowerEdge T430 system overview