Lenovo 4157VJU Personal Computer User Manual


 
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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
(optional)
Used to send and receive IEEE 1394 signals between the computer and other
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 rst, and then turn on the computer. When the power-on
self-test (POST) is nished, the logo window closes. If your computer has preinstalled software, the software
installation program starts.
Chapter 3. Setting up your computer 9