HP ProDesk 400 G4 Small Form Factor (SFF) - Maintenance and Service Guide
Front panel components
(1) Slim optical drive (optional) (5) Audio-out (headphone)/Audio-in (microphone)
combo jackAudio-out (headphone)/Audio-in
(microphone) combo jack
(2) Memory card reader (6) Hard drive activity light
(3) USB 2.0 port (7) Dual-state power button
(4) USB 2.0 port with HP Sleep and Charge*
*This port connects a USB device, provides high-speed data transfer, and even when the computer is o, charges products such as
a cell phone, camera, activity tracker, or smartwatch.
NOTE: When a device is plugged into the combo jack, a dialog box will open asking if you want to use the connector for a microphone
line-in device or a headphone. You can recongure the connector at any time by double-clicking the Audio Manager icon in
the Windows® taskbar.
2 Chapter 1 Product features