Instead were going to look at how to identify

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Instead, we're going to look at how to identify installed hardware components, manage connected USB components, and properly eject storage devices. System Information Utility 0:31-1:24 Let's start by looking at the hardware components. To do this, we use the System Information utility.System Information could be used to find detailed information about all the hardware components in the system. Right now, we're looking at the hardware overview. This gives basic information about the system.Such as processor, amount of memory, etcetera. But if we want to see more detailed information,select a particular component from the hardware list over here. For example, let's say we wanted to see USB information. We can click USB over here, and we're shown all the information about the USB controller. Including the version, PCI device ID, etcetera. We're also shown a list of all the connected devices. For example, we have a keyboard and mouse connected as well as an iSight webcam. We also have a San Disk Ultra, which is our USB thumb drive that's connected. When we select the thumb drive we can see additional information about it, including manufacture information, disk size, and file system type and so on.
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Ejecting USB Devices 1:25-2:16 Now, on a Mac system, external storage devices are ejected a little bit differently than Windows systems. When a USB storage device is connected to a Mac system its icon will appear on the desktop here. This icon tells us this is storage device. We can double click it to see its contents, which are displayed in Finder. When we need to disconnect the storage device, we need to eject the device in the OS before physically disconnecting it. There are two ways to do this. Connected devices not only appear on the desktop, but also on the sidebar of the Finder window. Notice over here is the USB drive, and next to it is the Eject icon. We can click this Eject icon and the system will safely eject the device. Another way is to drag the icon from the desktop. When we do, notice the Trash icon has changed to an Eject icon. When we drag the device to the icon, the device is ejected and is safe to remove. Summary 2:17-2:31 That's it for this demonstration. In this demo, we looked at managing devices on a Mac system. We looked at using System Information to view all the hardware devices that are in the system, and how it can be used to identify USB information. We then looked at the proper way to eject and disconnect USB storage devices. You should understand the following concepts that relate to installing hardware devices: Concept Description System resources A computer assigns system resources to hardware devices, and the computer uses these assignments to communicate with the device. You should be familiar with the following three categories of system resources: IRQ (Interrupt Request) is the method used by different system devices to interact with the CPU. An IRQ allows a device to interrupt the CPU and request processing time. All new devices allow the sharing of an IRQ; older (legacy) devices had to be assigned a unique IRQ.
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