This document provides information on various aspects of computer maintenance including graphics cards, audio connections, network adapters, modems, expansion cards, and safety procedures for installation. Graphics cards are recommended for better video performance than the motherboard. Network adapters use RJ-45 ports to connect to wired networks at speeds up to 1 Gbps. Expansion cards must be installed in the appropriate slot and follow proper safety procedures.

1. Computer Maintenance

3.  Motherboard doesn’t have built-in video
 Better video performance than motherboard
provides
 Built-in video fails or is troublesome
 Need to use two or more monitors

4.  Right-click on Desktop
 Click on Screen Resolution
 Resolution
 Multiple monitors

8.  Microphone input: For a computer
microphone.
 Line input: For an external line source such as
a CD player
 Speaker/headphone output: For speakers or
headphones.

11.  RJ-45 port
 Speeds: 10, 100, 1000 Mbps
 Check cable first when not working
 Check status lights
 Wired vs. Wireless

14.  2 RJ-11 ports
◦ One connects to the phone line and the other is to
connect a phone
 Max speed of 56Kbps
 External modem used for Cable and DSL

17.  TV Tuner Card
 Interface Adapter Cards
◦ USB 3.0
◦ Firewire
◦ Parallel
◦ Serial
 POST Card

19.  Select appropriate expansion slot
◦ ISA, PCI, PCIe, AGP (video cards)
 Use safety precautions
 Plug and Play
 Install drivers if needed