For Machine Types: 2113, 2114, 2115, 3515, 4860, 4863, 4865, 4866, 4869, 5100, 10Bs, 10Bt, And 10Bu; Locating Connectors, Controls, And Indicators On The Front Of Your Computer - Lenovo ThinkCentre M78 Hardware Maintenance Manual

For machine types: 2113, 2114, 2115, 3515, 4860, 4863, 4865, 4866, 4869,
5100, 10BS, 10BT, and 10BU
Locating connectors, controls, and indicators on the front of your
computer
Figure 6 "Front connector, control, and indicator locations" on page 73 shows the locations of the
connectors, controls, and indicators on the front of your computer.
Figure 6. Front connector, control, and indicator locations
1
Optical drive eject/close button
2
Power switch
3
Hard disk drive activity indicator
4
Power indicator
5
USB 2.0 connector (USB port 2)
6
Microphone connector
7
Headphone connector
8
USB 2.0 connector (USB port 1)
73
.
Chapter 8 Locations