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Chapter 11: Advanced Personal Computers 17Technicians should have a good understanding of several types of interfaces:■■■■■USB 1.1: Transfers data at a maximum speed of 12 Mbps.USB 2.0: Transfers data at a maximum speed of 480 Mbps.IEEE 1394 (FireWire): Transfers data at 100, 200, or 400 Mbps.Parallel (IEEE 1284): Transfers data at a maximum speed of 3 Mbps.Serial (RS-232): Early versions were limited to 20 kbps, but newer versions can reachtransfer rates of 1.5 Mbps.■ SCSI (Ultra-320 SCSI): Connects as many as 15 devices with a transfer rate of 320Mbps.Worksheet 11.3.7: Research Computer ComponentsIn this worksheet, you research computer components. Refer to the worksheet in ITEssentials: PC Hardware and Software Labs and Study Guide, Third Edition (ISBN 1-58713-198-6). You can perform this worksheet now or wait until the end of the chapter.Upgrade and Configure Personal ComputerComponents and PeripheralsComputer systems need periodic upgrades for various reasons:■■■User requirements change.Upgraded software packages require new hardware.New hardware offers enhanced performance.Changes to the computer can cause you to upgrade or replace components and peripherals.You should research the effectiveness and cost for both options: upgrading and replacing.After completing this section, you will meet these objectives:■■■■■■Upgrade and configure a motherboardUpgrade and configure a CPU and a heat sink/fan assemblyUpgrade and configure RAMUpgrade and configure BIOSUpgrade and configure storage devices and hard drivesUpgrade and configure input and output devicesFigure 11-13 shows some of the different components and peripherals to upgrade.
18 IT Essentials: PC Harware and Software Companion GuideFigure 11-13 Upgrade or ReplaceUpgrade and Configure a MotherboardTo upgrade or replace a motherboard, you might have to replace several other components,such as the CPU, heat sink/fan assembly, and RAM. Figure 11-14 shows an example of anold motherboard and a replacement/new motherboard.Figure 11-14 MotherboardsA new motherboard must fit into the old computer case. The power supply must also becompatible with the new motherboard and be able to support all new computer components.
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CHAPTER 1Introduction to the Person
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CHAPTER 7Fundamental Printers and S
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CHAPTER 13Advanced Laptops and Port
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GlossaryThis glossary defines many
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ase station 3AppleTalk A protocol s
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desktop computer 7crosstalk Interfe
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floppy data cable 11FFast Ethernet
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