Brooklyn Technical High School



L E S S O N P L A N #41 Per. Name:

CLASS: Computer Repair, Maintenance, Upgrade and Management DATE: Friday January 2nd, 2010

TOPIC: USB Review. AIM: What are some issues encountered with USB devices?

NOTE:

1) At the end of the period, leave your computer on the desktop screen, put the keyboard on top of the monitor and push in your chair.

H.W. # 41:

1) What is a problem that arises when too many devices are connected to a USB port?

2) You have an old computer with 2 USB 1.1 ports. You want to get more USB ports and faster USB ports. What are your options?

DO NOW:

1) Look up the following terms at encyclopedia.

A) Serial Port -

B) COM Port -

C) UART

D) RS-232

PROCEDURE:

Write the AIM and DO NOW.

Get students working!

Go Over HW

Collect HW

Go over the Do Now

Assignment #1:

Go to Device Manager, and then go to Ports then right-click on your COM port. Examine some of the settings you can change.

Assignment #2:

Another input/output connection is a USB connection. Although we’ve done it already, look up USB and USB Hub at encyclopedia. Examine the different USB connection types. Also read about AC powered or self powered USB devices.

What is the difference in speeds between USB 1.1 and USB 2.0?

If you have a USB 1.1 connection on your computer, how can you get USB 2.0 for your computer?

Go to . What are some of the features of this USB adapter card?

I guess this is also a way to add more USB ports to your computer.

What is a special feature of this keyboard at this URL ?

What is the maximum cable length of a USB device?

Assignment #3:

Go to . What is a USB host controller?

How many devices can be connected to the USB root hub that is connected to the USB host controller? 127

How many USB ports are usually seen on a motherboard?

Assignment #4:

Go to Device Manager. Differentiate between the high speed host controller and the low speed host controller. Go to where it says USB controllers. Open that up. The one that says Enhanced is the high speed controller and the one that says Standard is the low speed USB controller

Go to one of your USB devices, then click Properties. Look at the Power Tab. What is the Power situation for your USB device?

Question:

When should you install a driver for a USB device?

Assignment #5:

Search for and download UVCView.exe. Run this file to examine your USB connection status.

Sample Test Questions:

1) What type of flash memory card is currently the most popular?

A) Compact Flash B) Memory Stick C) Secure Digital D) Smart Media

2) A serial port sends and receives serial data. What device translates that serial data into parallel data for the computer to use?

A) Host Controller B) IC-USB C) Serial Port D) UART

3) What happens to bus speed and power usage when you plug multiple devices into a USB hub?

A) The bus speed stays constant, but power usage increases

B) The bus speed increases because each device brings a little burst; power usage increases

C) The bus speed decreases because all devices share the same total bandwidth; power usage increases

D) The bus speed decreases because all devices share the same total bandwidth; power usage decreases

4) You take a tech call from a user who complains that she gets an error message, “Hub power exceeded”, when she plugs her new thumb drive into her USB keyboard’s external USB port. Worse, the device won’t work. What’s most likely the problem?

A) Her USB port is defective

B) She has a defective thumb drive

C) She plugged a Hi-Speed device into a Full-speed (low speed version) port

D) She plugged one too many devices into the USB hub

5) What is the fastest speed that Hi-Speed USB 2.0 can go?

A) 12 Mbps B) 120 Mbps C) 400 Mbps D) 480 Mbps

6) USB 1.1 devices can run at two speeds. What are the speeds?

A) 1 and 2 Mbps B) 1.5 and 12 Mbps C) 1.5 and 15 Mbps D) 12 and 48 Mbps

7) What is the maximum cable length for USB?

A) 1.2 meters B) 1.2 yards C) 5 meters D) 5 feet

8) Which end of the USB cable plugs into the PC?

A) A B) B C) Mini-A D) Mini-B

9) Mike has a Windows 2000 system that fails to boot an “NTLDR missing or corrupt” message. His system has one drive formatted as NTFS. He does not have any boot disks but his system can boot to a CD-ROM. Which of the following methods will get his system working again?

A) Boot from a Windows 98 startup disk and copy NTLDR from C:\WINNT to the C: drive

B) Boot the recovery console and use the repair utility

C) Boot to the CD-ROM and load a new copy of NTLDR

D) Boot to the CD-ROM and do a repair

10) Which of the following interfaces offers the highest data rate?

A) USB 1.1 B) IEEE 1284 C) FireWire D) SPP

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