Rear1. Audio line-out connector 2. DisplayPort™ out connectors3. HDMI™ out connector 4. Optional connector*5. USB 3.2 connectors Gen 1 6. USB 3.2 connector Gen 1 (with smart power-onfeature)7. Padlock loop 8. PS/2 mouse connector*9. PS/2 keyboard connector* 10. Ethernet connector11. E-lock slots 12. Serial connector*13. Smart cable clip slots 14. PCI-Express card area15. Security-lock slot 16. Power cord connector* for selected modelsOptional connectorDepending on the computer model, the connector might be a DisplayPort out connector, an HDMI outconnector, a USB-C (3.2 Gen 1) connector, or a VGA connector.Serial connectorConnect an external modem, a serial printer, or other devices that use a serial connector.Related topics• “USB specifications” on page 7.Chapter 1. Meet your computer 3