Lenovo 804 manual Locating components, Locating parts on the system board

Connector	Description
Microphone connector	Used to attach a microphone to your computer when you want to record sound or
	if you use speech-recognition software.
Serial port	Used to attach an external modem, a serial printer, or other devices that use a
	9-pin serial port.
USB connector	Used to attach a device that uses a USB connector, such as a USB keyboard,
	a USB mouse, a USB scanner, or a USB printer. If the USB connectors on your
	computer are not enough for you to connect all your USB devices, you can
	purchase a USB hub, which you can use to connect additional USB devices.
VGA monitor connector	Used to attach a VGA monitor or other devices that use a VGA monitor connector.

Locating components

Figure 3 “Component locations” on page 8 shows the locations of the various components in your computer. To remove the computer cover and gain access to the inside of the computer, see “Removing the computer cover” on page 12.

Figure 3. Component locations

1Heat sink and fan assembly

2Power supply assembly

3Memory modules (2)

4Optical drive

5Front USB and audio assembly

6Front bezel

7Front fan assembly

8Hard disk drive

9PCI card (available in some models)

10Heat sink fan duct

Locating parts on the system board

Figure 4 “System board part locations” on page 9 shows the locations of the parts on the system board.

8ThinkCentre User Guide