Dell Precision 3640 Tower Setup And Specifications page 11

Figure 2. Front view with advanced I/O configuration
1. Power button/Diagnostics indicator
2. Hard drive activity LED
3. 3.5 mm stereo headset/mic combo
4. USB 3.2 Type A Gen1 (5 Gbps)
5. USB 3.2 Type A Gen2 (10 Gbps)
6. Optical drive/CAC Reader (Optional)
7. Media card reader
8. USB 3.2 Type C Gen2 (10 Gbps), with PowerShare
9. USB 3.2 Type A Gen2 (10 Gbps), with PowerShare
Chassis 11