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Self-Installation Kit
Comcast High-Speed Service Hardware Installation Guide
This hardware installation guide, along with the Comcast High-Speed Internet Install
Wizard, will assist you in setting up your Comcast High-Speed Internet Service. You will
begin by installing the necessary hardware. Then, use the Comcast High-Speed Internet
Install Wizard to install the software.
If a Comcast technician has already completed a professional installation of the Comcast
High-Speed Internet Service in your home, you will not need to perform the tasks listed
here. In this case, you can use this information to refer to if you ever need to reinstall the
service or perform an install on a different computer. You must have a working cable
outlet in order to perform this installation. Call your local Comcast representative if you
require a cable outlet installation.
All cable modems operating on Comcast networks must be DOCSIS-compliant. This
means the modem was designed according to “Data Over Cable Service Interface
Specifications.” If you bought a DOCSIS-compliant modem and related equipment from
a third party, you were provided with instructions to install and connect the required
equipment yourself. The installation may require removing the case of your computer.
Prior to doing so, it is recommended that you refer to the manufacturer’s warranty. To
perform the installation correctly, follow all self-installation instructions related to the
Comcast High-Speed Internet Service software, cable modems and related equipment,
and consent to take on sole responsibility with for the installation.
Connecting your Comcast High-Speed Internet Service
There are several ways to connect your computer to the Comcast network. The way you
connect depends on the type of network adapter you are using and whether your cable
modem is compatible with your network adapter.
Every computer must have a network adapter to connect to the Comcast service. There
are two types of network adapters that may be used:
• A Network Interface Card, or NIC (sometimes referred to as an Ethernet card)
• A Universal Serial Bus, or USB
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The following illustrations show the different types of equipment you may need to
connect to the Comcast network. (Kit components will vary depending upon your
specific computer set-up.)
Two-Way Splitter
Cable Clips
Cable Modem
PCI Card ISA Card (note – kit will contain PCI card)
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USB Adapter
U
S
B
C
A
B
L
U SB CABLE E
USB Cable
Ethernet Cable
Coaxial Cable Jumper
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Network Adapter Installation
The steps that follow walk you through the installation of your network adapter. There
are three configurations on which to install a network adapter for the Comcast High-
Speed Internet Service. They are as follows:
1. A USB installation on a computer that is USB ready with a cable modem that is
USB compatible.
2. A USB installation on a computer that is USB ready with a cable modem that is
not USB compatible.
3. A NIC installation on a computer that is not USB ready.
Note: If your computer is USB-ready, we recommend you use USB to connect to the
Comcast service, since the USB installation is much quicker and less involved than the
NIC installation process. You do not need to open the computer to install a USB adapter.
Note: Windows NT and 95 do not support USB adapters and therefore a NIC installation
is required.
If your computer already has a network adapter installed you will not have to install a
NIC or USB adapter. You WILL need to use the Ethernet cable to connect your computer
(via the Ethernet port) to the cable modem.
STOP!
It is always a good idea to backup your files before installing new hardware on your
computer. To back up the system registry, follow the instructions for your Windows
operating system.
In no event shall Comcast be held liable for any loss or damages of any nature
whatsoever, including, and without limitation to, property damage and/or personal
injury (including death) resulting directly or indirectly from the installation or
connection by the customer of hardware and/or software for or related to the Comcast
High-Speed Internet Service.
Installing a USB Cable
Your computer must be USB ready to perform a USB installation. If the modem you are
using is USB compatible (and your computer is USB ready), you can use a USB cable
and connect it directly from the USB port on your computer to the USB port on the cable
modem.
The connection with a USB cable will look similar to the following illustration:
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USB Cable
Cable Modem
Computer with USB
Cable Modem to USB Port on Computer
You will need the following to install the USB cable on your computer:
• A USB cable
• The CD for your Windows operating system
To install the USB cable, perform the following steps:
1. Close any software applications running on your computer and return to the
desktop.
2. Pick up the USB cable and determine which end is the type B (square) connector
and which is the type A (rectangular) connector.
3. Plug the type B connector into the USB port on the cable modem.
4. Plug the type A connector into the USB port on your computer.
Type A Type B
After installing the USB adapter, you will need to install the necessary drivers. For most
operating systems, the system will automatically detect the new hardware. Refer to the
manufacturer’s floppy diskette or CD for the network adapter that you installed to obtain
and install the driver software. The network adapter won’t work unless the correct driver
software is installed.
Installing a USB-to-Ethernet adapter
Your computer must be USB ready to perform an installation with USB. If your modem
is not USB compatible (and your computer is USB ready), you will need to use a USB
adapter to connect to the Comcast network.
The connection with the USB adapter will look similar to the following illustration:
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USB Cable Ethernet Cable
Cable Modem
Computer with USB without USB
Cable Modem to USB - to - Ethernet Adapter
You will need the following to install the USB-to-Ethernet adapter on your computer:
• A USB-to-Ethernet adapter
• An Ethernet cable
• A USB cable
• The CD for your Windows operating system
To establish the USB connection using a USB adapter, perform the following
steps:
1. Close any software applications running on your computer and return to the
desktop.
2. Plug one end of the Ethernet cable into the Ethernet port on the back of your cable
modem.
Cable Modem
Ethernet Cable
3. Take the other end of the Ethernet cable and plug it into the Ethernet port on the
USB adapter.
4. Pick up the USB cable and determine which end is the type B (square) connector
and which is the type A (rectangular connector).
5. Plug the type B connector into the USB adapter and the type A connector into the
USB port on your computer.
Type A Type B
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After installing the USB adapter, you will need to install the necessary drivers. For most
operating systems, the system will automatically detect the new hardware. Refer to the
manufacturer’s floppy diskette or CD for the network adapter that you installed to obtain
and install the driver software. The network adapter won’t work unless the correct driver
software is installed.
Installing a Network Interface Card (NIC)
If you are using a NIC to connect to the Comcast network, you will connect an Ethernet
cable directly to the cable modem and the Ethernet port on your computer.
The connection with a NIC will look similar to the following illustration:
Ethernet Cable
Cable Modem
Computer with NIC
Cable Modem to NIC on Computer
You will need the following to install the NIC on your computer:
• A NIC
• An Ethernet cable
• The CD for your Windows operating system
• A screwdriver if required to remove the case of your computer
For future reference, we recommend that you write down the name of your NIC here:
For example, a modem may be named “3Com Etherlink 3C509B”. Recording the name
makes it easier for you to determine if you have installed the correct driver software to
troubleshoot if necessary.
STOP!
Important: This procedure requires removing the case of your computer. Review your
computer’s warranty information prior to opening the computer case.
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To install a NIC, perform the following steps:
1. Turn off your computer.
2. Remove any jewelry from your hands and wrists. Make sure to ground yourself
by placing your hands on a metal object to discharge any electricity BEFORE
touching any of the inner components of your computer.
3. Unplug the power cord. Remove all screws from the cover of your computer and
place them in a safe area.
4. Remove the case of the computer by sliding the cover either forward or backward
(the removal method depends on the case). Place the cover to the side. You can
use your computer’s casing to discharge any static electricity that may build up by
placing your hands on it regularly during the installation process.
5. Now locate the slot into which you will insert the Network Interface card. There
are two types of slots for NICs and where to place the card depends on the type of
NIC you have. The two slots allow for either a PCI card (typically included in
your kit) or an ISA card. The PCI card slot is a short, white slot while the ISA
slots are longer and black. When installing either card, the length of the card
must match the length of the slot.
The following is a sample motherboard with ISA and PCI slots.
PCI and ISA Slots
6. Hold the card by its edges only and align it with the appropriate slot available.
Insert the card into the slot, rocking it firmly into place. Continue until the card is
firmly seated. Only touch the card on the edges to prevent damaging it. A card
is inserted correctly when the top lip of its metal plate rests on the bracket of the
PC.
7. Use the screw that you removed earlier to attach the new card to the PC.
8. Place the computer’s cover back on by sliding it into place as you did prior
replace the screws that hold it in place as necessary.
9. Plug the computer’s power cord in.
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Troubleshooting the USB cable or NIC installation
Problem Encountered Possible Solution
The USB connection is not working on my The wrong driver software was installed for
computer. the network adapter.
The computer being used has Windows 95
or Windows NT operating system software
which do not support USB.
The USB cable is not connected properly.
The Ethernet Cable is not connected
properly (if using a USB adapter).
The NIC is not recognized by my The wrong driver software was installed for
computer. the network adapter.
The NIC is not seated properly and/or
completely.
The Ethernet cable is not connected
properly.
My computer says it cannot find the driver The driver for your network adapter is on
for my network adapter. the disk or CD provided by the
manufacturer of the adapter and/or on the
disk or CD provided in your installation
kit.
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