Linksys BEFCMU10 - Cable Modem With USB User manual

LINKSYS BEFCMU10 ver. 3 User Manual
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LINKSYS BEFCMU10 ver. 3 Cable Modem
User’s Manual

LINKSYS BEFCMU10 ver. 3 User Manual
Safety Notes
For Installation
 Use only the type of power source indicated on the marking labels.
 Use only the power adapter supplied with the product.
 Do not overload wall outlet or extension cords as this may increase the risk of electric shock or file. If the
power cord is frayed, replace it with a new one.
 Proper ventilation is necessary to prevent the product overheating. Do not block or cover the slots and
openings on the device, which are intended for ventilation and proper operation. It is recommended to
mount the product with a stack.
 Do not place the product near any source of heat or expose it to direct sunshine.
 Do not expose the product to moisture. Never spill any liquid on the product.
 Do not attempt to connect with any computer accessory or electronic product without instructions from
qualified service personnel. This may result in risk of electronic shock or file.
 Do not place this product on an unstable stand or table.
For Using
 Power off and unplug this product from the wall outlet when it is not in use or before cleaning. Pay
attention to the temperature of the power adapter. The temperature might be high.
 After powering off the product, power on the product at least 15 seconds later.
 Do not block the ventilating openings of this product.
 When the product is expected to be not in use for a period of time, unplug the power cord of the product to
prevent it from the damage of storm or sudden increases in rating.
For Service
Do not attempt to disassemble or open covers of this unit by yourself. Nor should you attempt
to service the product yourself, which may void the user’s authority to operate it. Contact
qualified service personnel under the following conditions:
 If the power cord or plug is damaged or frayed.
 If liquid has been spilled into the product.
 If the product has been exposed to rain or water.
 If the product does not operate normally when the operating instructions are followed.
 If the product has been dropped or the cabinet has been damaged.
 If the product exhibits a distinct change in performance.
Warning
 This equipment must be installed and operated in accordance with provided instructions and a minimum 20
cm spacing must be provided between computer mounted antenna and person’s body (excluding extremities
of hands, wrist and feet) during wireless modes of operation.
 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Caution
 Any changes or modifications not expressly approved by the party responsible for compliance could void
the authority to operate equipment.

LINKSYS BEFCMU10 ver. 3 User Manual
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NOTE
 This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
topart 15 of the FCCRules.These limitsare designed toprovide reasonable protection against harmful
interference in a residential installation.This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radiocommunications.However,there is noguarantee that interference will notoccur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.

LINKSYS BEFCMU10 ver. 3 User Manual
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1.1 Physical Outlook
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The following illustration shows the front panel of the LINKSYS BEFCMU10 VER. 3 Cable
Modem.
LED Indicators
The LEDs on the front panel are described in the table below (from left to right):
LED Color Status Description
Off Power off.
POWER Green On Power on.
Off Power off or the initial test is over.
Cable Green
Blinking To indicate cable modem is on line.
Off Power off or the initial test is over.
Activity Green
Blinking To indicate transmit RF US traffic.
Off Power off or the initial test is over.
Blinking To indicate Ethernet data traffic.
Ethernet Green
On Ethernet line is in use.
Off Power off or the initial test is over.
Blinking To indicate USB data traffic.
USB Green
On USB interface is in use.
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12 VDC: 12V Power connector
RESET︰Reset-to-Default push button
LAN︰10/100BaseTX RJ-45 connectors
USB：USB Connector

LINKSYS BEFCMU10 ver. 3 User Manual
CABLE︰F-Connector

LINKSYS BEFCMU10 ver. 3 User Manual
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Ch ha ap pt te er r 2 2: : I In ns st ta al ll la at ti io on n
2.1 Connecting the Cable Modem to Your Computer
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Follow the steps below for proper installation:
1. Make sure your computer meets the system requirements.
2. Connect a coaxial cable (supplied by the local Cable Television Company) to the CABLE
connector on the modem.
3. Plug the power adapter into the POWER connector of the modem.
4. Plug the other end of the power adapter into a power outlet.
5. Check CABLE LED. If it is solid ON, the Cable Modem is on-line now. If it is not, contact
your service provider.
5. Connect the RJ-45 Ethernet cable to one of the ETHERNET connector on the modem,
connect the other end with the 10/100BaseT Ethernet port on your computer.
6. When the connection is established, the client PCs can access the Internet or remote network
through the LINKSYS BEFCMU10 ver. 3.
Note: You can go to Chapter 3.3 “Setting TCP/IP on client PC” now
Below shows the connection status among the cable modem and your computer.

LINKSYS BEFCMU10 ver. 3 User Manual
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Follow the steps below for proper installation:
1. Make sure your computer meets the system requirements.
2. Connect a coaxial cable (supplied by the local Cable Television Company) to the CABLE
connector on the modem.
3. Plug the power adapter into the POWER connector of the modem.
4. Plug the other end of the power adapter into a power outlet.
5. Check CABLE LED. If it is solid ON, the Cable Modem is on-line now. If it is not, contact
your service provider.
6. Connect the USB cable to the USB connector on the modem.
Note: You can go to Chapter 3.1 “USB Driver installation” now
7. When the connection is established, the client PCs can access the Internet or remote network
through the LINKSYS BEFCMU10 ver. 3.
Note: You can go to Chapter 3.3 “Setting TCP/IP on client PC” now
Below shows the connection status among the cable modem and your computer.

LINKSYS BEFCMU10 ver. 3 User Manual
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3.1 USB Driver Installation
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1. Wait for the cable modem is running in the operational state (registration O.K.). Plug the
USB cable into your PC USB port. You will see the next page. Click the “Next” button.
2. Select “Search for the best drivers for your device“ and click the “Next” button.
3. Check “Specify a location” and browse CD-ROM:\Win9x or WinME. Click the “Next”
button.

LINKSYS BEFCMU10 ver. 3 User Manual
4. Select “The updated driver...” and click the “Next” button.
5. Click the “Next” button.
6. Installation has been completed here. Click the “Finish” button.

LINKSYS BEFCMU10 ver. 3 User Manual
7. The system will ask you to restart your computer. Click “Yes” to complete the installation.
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1. Wait for the cable modem is running in the operational state (registration O.K.). Plug the
USB cable into your PC USB port.
2. You will see the next page. Click the “Next” button.

LINKSYS BEFCMU10 ver. 3 User Manual
3. Select “Search for a suitable driver for my device“ and click the “Next” button.
4. Insert the driver CD into CD-ROM. Select “CD-ROM drive” and clicks the “Next” button.
5. Click the “Next” button.

LINKSYS BEFCMU10 ver. 3 User Manual
6. Installation has been completed here. Click the “Finish” button.
3.2 Uninstall USB Driver
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1. Click “Start” button on your computer’s taskbar, point to “Settings”, and then click “Control
Panel”.
2. Select Add/Remove Programs.
3. On the Install/Uninstall tab, select USB Cable Modem Adapter from the list box. Click the
Add/Remove button.
4. A confirmation dialog appears. Click Ye s .
5. A dialog box appears to ask you unplug USB cable, please unplug the cable and click OK.
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1 Click on the Start menu, point to Settings and click on Control Panel.
2 Select Add/Remove Programs.
3 Select USB Cable Modem Adapter from the list box.
4 Click the Change/Remove button.
5 Click Ye s button.
6 A dialog box appears to ask you unplug USB cable, please unplug the cable and click OK.

LINKSYS BEFCMU10 ver. 3 User Manual
3.3 Setting TCP/IP on Client PC
After you successfully complete the network interface card (Ethernet card) installation task, you need
to make sure the TCP/IP communications protocol used by the Ethernet card is installed and correctly
configured on your system.
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1. Click on the Start menu, point to Settings and click on Control Panel.
2. The Control Panel window will show up. Double-click the “Network” icon in the Control
Panel window.
3. Windows will appear the Network dialog box. Click “Configuration” tab to bring it to the
front, and on this tab, a list of installed network components appears.
Option 1: If you have no TCP/IP protocol, click Add.
Option 2: If you have TCP/IP protocol, go to Step 7.

LINKSYS BEFCMU10 ver. 3 User Manual
4. The Select Network Component Type dialog box will show up. Click ”Protocol”, and then
click ”Add”.
5. You will see the Select Network Protocol dialog box. Click “Microsoft” in the
“Manufactures:” list, and then click “TCP/IP” in the “Network Protocols:” list. Click “OK”.

LINKSYS BEFCMU10 ver. 3 User Manual
6. You will be directed back to the Network dialog box, and on the “Configuration” tab, the
entry that includes TCP/IP -> followed by the Ethernet card installed in your computer will
appear in the list of installed network components.
7. Click TCP/IP -> followed by the Ethernet card installed in your computer, and then
click ”Properties”. The TCP/IP Properties dialog box will appear.

LINKSYS BEFCMU10 ver. 3 User Manual
8. In the TCP/IP Properties dialog box, please follow the directions below: Click “IP Address”
tab to bring it to the front, and then click “Obtain an IP address automatically” on the tab.
9. Click “Gateway” to bring it to the front. On this tab, leave the “New gateway:” blank. If there
is the entry in the “Installed gateway:” list, click it and then click “Remove” to remove all
installed gateways.
10. Click “DNS Configuration” tabs to bring it to the front, and click “Disable DNS”, then click
“OK” to close the dialog box.

LINKSYS BEFCMU10 ver. 3 User Manual
11. The Copying Files dialog box will pop up and the system will start copying files from
Windows. At the first time you will be asked to insert the Windows 98 CD-ROM into the
CD-ROM drive during the files copying, and follow the instructions when they show up, then
click “OK”. It will prompt another Copying Files dialog box. Please type the command line
that Windows files located in the dialog box (For example, D:\win98). Click “OK” to
continue the files copying.
12. Windows will appear the System Settings Change dialog box and ask you if you would like
to restart your computer. Click “Yes”.

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1. Click “Start” button on your computer’s taskbar, point to “Settings”, and then click ”Network
and Dial-up Connections”.
2. The Network and Dial-up Connections window will show up. Double-click “Local Area
Connection” icon in the Network and Dial-up Connections window.
3. The Local Area Connection status window will show up. Click the “Properties” button.

LINKSYS BEFCMU10 ver. 3 User Manual
4. Click “Internet Protocol (TCP/IP)” and then click “Properties”.
5. The Internet Protocol (TCP/IP) Properties dialog box appears. Click “Obtain an IP address
automatically”. Click “Obtain DNS server address automatically”. Click “OK” to close the
dialog box.

LINKSYS BEFCMU10 ver. 3 User Manual
6. Windows will appear the System Settings Change dialog box and ask you if you would like
to restart your computer. Click “Yes”.
3.4 DHCP Server
PC connected to the cable modem can automatically get a private IP address from the DHCP server of
cable modem before cable modem is on line. The following steps will show you how to get an IP
address from DHCP server of cable modem before cable modem is on line.
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1. Click “Start“, point to “Run“, and click to open the “Run“ windows.