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NETGEAR CM212 - page 1
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NETGEAR CM212 - page 2
Introduction Thank you for purchasing a NET GEAR CM212 Cable Modem. With this modem you can have secure high-speed I nternet access and, if you have an Cable/DSL Gateway Router , share the modem with several computers. This installation guide shows you ho w to connect the modem and configure it and your computers for secure Internet access. S etup ...
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NETGEAR CM212 - page 3
What’ s in the Bo x When you open the box, verify that you r eceived everything. The package includes: • NETGEAR CM212 Cable M odem • AC pow er adapter • V er tical stand • Ethernet patch cable • USB cable • CM212 GearBox CD • CM212 Installation Guide (this document) • W arranty and registration car d • Support information car d ...
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NETGEAR CM212 - page 4
Prepare f or Installation Before installing the CM212 cable modem, you should hav e active (two-way) cable service and an Internet account with your cable provider . Note: If you’re connecting a single computer to the modem, you may use either the modem’s USB or Ethernet port. If you’re connecting more than one computer , you must use the Eth ...
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NETGEAR CM212 - page 5
Install the Cab le Modem After unpacking the box, you can install the cable modem. Y ou do not have to po wer down any equipment to do this, but if you need to mo ve your computer (perhaps to get to a port in the back), you may want to shut down the computer before mo ving it. USB Connection U se the USB cable if you ’ re connecting the modem to ...
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NETGEAR CM212 - page 6
Ethernet Connection U se the Ethernet cable if you ’ re connecting the modem to one or more computers and you have an available RJ-45 port on your computer . 1. Connect the CA TV cable from the wall outlet to the Cable port on the modem. 2. Connect the Ethernet cable to the RJ-45 port on the computer and to the E thernet port on the modem. 3. Con ...
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NETGEAR CM212 - page 7
Conf igure the Computer to W ork with the Modem N ext, you configure the computer to interact with the modem. USB Connection Note: The modem must be connected to the Coaxial Cable and established link (Cable and Status Lights are solid Green) before your PC will recognize the modem. F or the USB connection, you need to install USB drivers on your W ...
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NETGEAR CM212 - page 8
4. Select “ Search for suitab le drivers f or my device ” and click Ne xt 5. Select CD-ROM Driv es and click Next . 7 ...
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NETGEAR CM212 - page 9
6. Click Next when the follo wing dialog box appears. 7. Click Finish . 8 ...
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NETGEAR CM212 - page 10
8. When the following dialog box appears, click Ye s . 9. Restart the computer . 10. P roceed to Chapter 4 – T est the Connection on page 11. Ethernet Connection F or the Ethernet connection, configur e the T CP/IP settings on the computer and then restart the computer . How you do this depends on y our computer . Windo ws Operating System N orma ...
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NETGEAR CM212 - page 11
Windo ws 98 or Me 1. Choose Settings>Control Panel from the Start menu. 2. Double-click the Netw ork icon. 3. Click the Configuration tab . 4. In the list of installed network components, select the T CP/IP entry for the computer ’ s Ethernet adapter or NIC. 5. Click Properties . 6. Click the IP Address tab. 7. If not selected, select Obtain a ...
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NETGEAR CM212 - page 12
Macintosh Operating System Mac OS ® 8.6 or 9.x 1. Choose Control Panels > TCP/IP from the Apple ( ) menu. 2. Choose User Mode from the Edit menu. 3. Click Advanced and click OK . 4. If not already selected, select E thernet in the Connect via list. 5. Select Using DHCP Server in the Configure list. 6. Clear the Use 802.3 check box if it ’ ...
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NETGEAR CM212 - page 13
T est the Connection T o test your setup, y ou view a W eb page online. 1. Start your I nternet browser on the computer 2. Go to NET GEAR ’ s W eb site (www .NET GEAR.com). Note: If NETGEAR ’ S Web site doesn ’ t appear , go to T roubleshooting on page 13. 3. Quit your Internet br owser . 12 4 4 ...
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NETGEAR CM212 - page 14
Sharing Y our Cab le Internet with Multiple Computers Combining a Cable/DSL router with your Cable M odem enables you to connect multiple computers so they can share access. Refer to your R outer documentation for complete installation instructions. Cable/DSL Web Saf e Router RP614 USB CABLE ETHERNET POWER RESET 12VDC 1.0A-1.25A CM212 Broadband Cab ...
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NETGEAR CM212 - page 15
T roub leshooting No lights are lit on the modem The modem has no power . • Make sure the po wer adapter is properly connected to the modem. • Make sure the po wer adapter is properly connected to a functioning pow er outlet. If it ’ s in a power strip , make sure the pow er strip is turned on. • Make sure y ou ’ re using the correct po w ...
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NETGEAR CM212 - page 16
F or Windo ws, the N etwork P roperties should have Obtain an IP address automatically selected (see page 9). F or Macintosh computers, the TCP/IP (or N etwork) control panel should be set to Using DHCP Server (see page 10). Resetting TCP/IP Properties (Windo ws) If you ’ re on a W indows computer and are still having problems, you may try the fo ...
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NETGEAR CM212 - page 17
Glossary of T erms Category 5 (C A T5): A twisted pair cable that meets specified requirements for high-speed networking. Community Antenna T ele vision (CA TV): Broadband cable TV and Internet access service. DOCSIS: Data Over Cable Service Interface Specification. A specification that defines interface requirements for cable modems. IP Address: A ...
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NETGEAR CM212 - page 18
V oluntary Control Council for Interference (VCCI) Statement This equipment is in the second category (information equipment to be used in residential areas) and conforms to the standards set by the V oluntary Control Council for Interference by Data P rocessing Equipment and Electronic Office Machines that are aimed at pr eventing radio interferen ...
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NETGEAR CM212 - page 19
T echnical Supp ort PLEASE REFER T O THE SUPPORT INFORMA TION CARD THA T SHIPPED WITH YOUR PR ODUCT. By r egistering your product at www .NET GEAR.com/register , we can provide you with faster expert technical support and timely notices of product and software upgrades. NETGEAR, INC. Support Information Phone: 1-888-NET GEAR (F or US & Canada o ...
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