Lenovo 4157, 4105, 4217 manual Turning on computer power

1

USB connector	Used to attach a device that requires a USB connector, such as a USB keyboard,
	a USB mouse, a USB scanner, or a USB printer. If you have more than 10 USB
	devices, you can purchase a USB hub, which you can use to connect additional
	USB devices.

2

Serial port	Used to attach an external modem, a serial printer, or other devices that use a
	9-pin serial port.

3

Ethernet connector	Used to attach an Ethernet cable for a local area network (LAN).
	Note: To operate the computer within FCC Class B limits, use a Category 5
	Ethernet cable.

4	IEEE 1394 connector	Used to send and receive IEEE 1394 signals between the computer and other
(optional)		compliant devices, such as a video camera or an external storage drive. This
		connector is sometimes called Firewire.

5

eSATA connector	Use this External Serial Advanced Technology Attachment (eSATA) connector
	to attach an external hard disk drive.

9. Connect the power cords to properly grounded electrical outlets.

Turning on computer power

Turn on the monitor and other external devices first, and then turn on the computer. When the power-on self-test (POST) is finished, the logo window closes. If your computer has preinstalled software, the software installation program starts.

Chapter 3. Setting up your computer 9