Lenovo 4157 User Manual - Page 19
Connect any additional devices that you have. Your computer might not
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8. Connect any additional devices that you have. Your computer might not have all the connectors that are shown. 1394 1394 1 USB connector Used to attach a device that requires a Universal Serial Bus (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. Chapter 3. Setting up your computer 11