US Robotics USR997924 User manual

24-Port 10/100 Ethernet Switch
Installation Guide
Guide d'installation
Installationsanleitung
Guida per l’installazione
Installatiegids
Gu a de instalación
Manual de Instalação
Installationshandbok
Руководство по установке
R24.0388.00

Installation Guide......................................................................................1
Guide d'installation ...................................................................................9
Installationsanleitung ................................................................................19
Guida per l’installazione.............................................................................27
Installatiegids...........................................................................................35
Guía de instalación....................................................................................45
Manual de Instala ão.................................................................................55
Installationshandbok .................................................................................65
Руководство по установке..........................................................................73

1
Installation
Package Contents:
- 24-Port 10/100 Ethernet Switch - Quick Installation Guide - Power cord
LEDS Color - Action Function
PWR Green - Lighted Receiving power
Green - Off Not receiving power
10/100 LINK/ACT 1-24
(Each LED corresponds
with a LAN port on the
front.)
Green - Lighted 100 Mbps LAN link is achieved
Green - Blinking Sending and receiving data at the corresponding LAN port
Yellow - Lighted 10 Mbps LAN link is achieved
Yellow - Blinking Sending and receiving data at the corresponding LAN port
Front Function
LAN Ports 1 through 24 The LAN ports are used to connect Ethernet devices to the LAN.
Rear Function
100-240VAC This connection port is for the power supply of the 24-Port 10/100 Ethernet
Switch.

2
Before You Begin
Note: For more information, you can also refer to the Support section of the U.S. Robotics
Web site at http://www.usr.com/support
Note: Your model number is 7924. It is important that you have your serial number written
down before you install the 24-Port 10/100 Ethernet Switch. You can find your serial
number on the bottom label of the 24-Port 10/100 Ethernet Switch and on the side of the
package. If you ever need to call our Technical Support department, you will need this number to
receive assistance.
Step 1. Connect the power supply
Step 2. Connect your 24-Port 10/100 Ethernet Switch to your Ethernet-ready
device

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Congratulations! The installation of your U.S.Robotics 24-Port 10/100 Ethernet Switch is
complete. As connections are established with the 24-Port 10/100 Ethernet Switch, the
corresponding LED lights will turn on. Repeat this step as needed for up to twenty three
additional devices.
This is one of many possible configurations.
Note: For networking information, refer to your operating system’s documentation.
Register your product online at http://www.usr.com/productreg

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Troubleshooting
My 24-Port 10/100 Ethernet Switch is properly connected to my
Ethernet-ready device, but I still can’t establish a connection.
Possible Solution:
Verify you are using a known and reliable RJ-45 Category 5 Ethernet cable. An old or unreliable RJ-
45 Category Ethernet cable could disrupt your connection. It may be necessary to replace your RJ-
45 Category 5 Ethernet cable.
Possible Solution:
Check the LED status lights on your 24-Port 10/100 Ethernet Switch. A flashing yellow light indi-
cates you are receiving and transmitting data at 10 Mbps. A flashing green light indicates you are
receiving and transmitting data at 100 Mbps. If you don’t see any LEDs lighted or blinking, it may
be necessary to replace your RJ-45 Category 5 Ethernet cable.
Possible Solution:
The length of your Ethernet cable between your 24-Port 10/100 Ethernet Switch and your work-
station or computer should not exceed 328 feet. Some power sources with strong electromag-
netic fields may be causing interference.
Possible Solution:
It may be necessary to reconfigure the network settings of your operating system. Refer to your
operating system’s documentation regarding network configuration specifics.
My 24-Port 10/100 Ethernet Switch is properly connected to my
Ethernet-ready device but my connection speed is slow.
Possible Solution:
Verify that your network adapter and/or additional Ethernet-ready device supports 100 Mbps. You
may be using a 10 Mbps device. To achieve 100 Mbps speeds, replace any 10 Mbps devices you
are using with 100 Mbps devices.
Possible Solution:
Check the LED status lights on your 24-Port 10/100 Ethernet Switch. A flashing yellow light indi-
cates you are receiving and transmitting data at 10 Mbps. A flashing green light indicates you are
receiving and transmitting data at 100 Mbps. If you only see blinking LEDs, it may be necessary to
replace your RJ-45 Category 5 Ethernet cable.

5
Possible Solution:
Verify you are using a known and reliable RJ-45 Category 5 Ethernet cable. An old or unreliable RJ-
45 Category Ethernet cable could diminish your link quality. It may be necessary to replace your
RJ-45 Category 5 Ethernet cable.
Possible Solution:
The length of your Ethernet cable between your 24-Port 10/100 Ethernet Switch and your
workstation or computer should not exceed 328 feet. Some power sources with strong
electromagnetic fields may be causing interference.
What kind of cables should I use?
Possible Solution:
The 24-Port 10/100 Ethernet Switch may be used with an RJ-45 Category 5 Ethernet cable.
Where is the uplink port?
Possible Solution:
Each port may be used as an uplink port since each supports auto-crossover. This means that
each port on the 24-Port 10/100 Ethernet Switch automatically allows for connecting additional
hubs, switches, or routers with an RJ-45 Category 5 Ethernet cable.
Are You Still Having Problems?
1. Go to the Support section of the U.S Robotics Web site at www.usr.com
Many of the most common difficulties users experience have been addressed in the FAQ and
Troubleshooting Web pages for your specific product. The model number for the 24-Port 10/100
Ethernet Switch is 7924. You may need to know this to obtain information on the U.S. Robotics
Web site.
2. Call the U.S. Robotics Technical Support Department
Technical questions about U.S. Robotics products can also be answered by technical support
specialists.
Country Voice Online Support Hours
United States [phone] http://www.usr.com/emailsupport 9:00 A.M. - 5:00 P.M., M-F CST
Canada [phone] http://www.usr.com/emailsupport 9:00 A.M. - 5:00 P.M., M-F CST
Argentina AT&T Direct + [phone] [e-mail] 9:00 A.M. – 5:00 P.M., M-F CST
Brazil AT&T Direct + [phone] brazil_modemsuppo[email protected] 9:00 A.M. – 5:00 P.M., M-F CST
México AT&T Direct + [phone] [e-mail] 9:00 A.M. – 5:00 P.M., M-F CST
Chile AT&T Direct + [phone] [e-mail] 9:00 A.M. – 5:00 P.M., M-F CST
Colômbia AT&T Direct + [phone] [e-mail] 9:00 A.M. – 5:00 P.M., M-F CST
Costa Rica AT&T Direct + [phone] lat_modemsupp[email protected]om 9:00 A.M. – 5:00 P.M., M-F CST
Peru AT&T Direct + [phone] lat_modemsuppo[email protected] 9:00 A.M. – 5:00 P.M., M-F CST
Puerto Rico AT&T Direct + [phone] lat_modemsuppo[email protected] 9:00 A.M. – 5:00 P.M., M-F CST
Venezuela AT&T Direct + [phone] lat_modemsupp[email protected]om 9:00 A.M. – 5:00 P.M., M-F CST
China 10800 650 0217 usrapsupp[email protected]om 9:00A.M.–5:00P.M.M-F
Hong Kong 800 908 425 [e-mail] 9:00A.M.–5:00P.M.M-F
India - Delhi 11 6284198/99/18/19 [e-mail] 9:00A.M.–5:00P.M.M-F
India - Hyderabad 40 6261600/01/02/03 [e-mail] 9:00A.M.–5:00P.M.M-F

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India - Calcutta 33 216 1800/01 [e-mail] 9:00A.M.–5:00P.M.M-F
India - Chennai 44 851 5273/74 [e-mail] 9:00A.M.–5:00P.M.M-F
India - Bombay 22 8252188/93/94/95 usrapsupp[email protected]om 9:00A.M.–5:00P.M.M-F
India - Bangalore 80 2380303/04 usrapsupp[email protected]om 9:00A.M.–5:00P.M.M-F
Indonesia 001 803 6310011 [e-mail] 9:00A.M.–5:00P.M.M-F
Japan 00531 63 0007 [e-mail] 9:00A.M.–5:00P.M.M-F
Korea 00798 6310025 [e-mail] 9:00A.M.–5:00P.M.M-F
Malaysia 1800 808514 [e-mail] 9:00A.M.–5:00P.M.M-F
Philippines 1800 18888426 usrapsupp[email protected] 9:00A.M.–5:00P.M.M-F
Singapore 800 6363037 [e-mail] 9:00A.M.–5:00P.M.M-F
South Korea 00798 6310025 usrapsuppo[email protected]om 9:00A.M.–5:00P.M.M-F
Taiwan 00806 31335 [e-mail] 9:00A.M.–5:00P.M.M-F
Thailand 001 800 631 0009 [e-mail] 9:00A.M.–5:00P.M.M-F
Australia 1800 125030 [e-mail] 9:00A.M.–5:00P.M.,M-F
New Zealand 0800 449535 [e-mail] 9:00A.M.–5:00P.M.,M-F
Austria 07 110 900 116 [e-mail] 8:00A.M.–6:00P.M.,M-F
Belgium (Flemish) [phone] [e-mail] 9:00A.M.–6:00P.M.,M-F
Belgium (French) [phone] [e-mail] 9:00A.M.–6:00P.M.,M-F
Denmark [phone] [e-mail] 9:00A.M.–5:00P.M.,M-F
Finland [phone] emea_modemsuppor[email protected] 10:00A.M.–6:00P.M.,M-F
France 082 507 0693 [e-mail] 9:00A.M.–6:00P.M.,M-F
Germany/Hungary 01805671548 [e-mail] 8:00A.M.–6:00P.M.,M-F
Ireland [phone] [e-mail] 9:00A.M.–6:00P.M.,M-F
Israel [phone] [e-mail] 9:00A.M.–5:30pm,M-F
Italy 848 80 9903 [e-mail] 9:00A.M.–6:00P.M.,M-F
Luxembourg [phone] [e-mail] 9:00A.M.–6:00P.M.,M-F
Middle East/Africa [phone] emea_modemsuppor[email protected] 9:00A.M.–6:00P.M.,M-F
Netherlands 0900 20 25 857 [e-mail] 9:00A.M.–6:00P.M.,M-F
Norway [phone] [e-mail] 9:00A.M.–5:00P.M.,M-F
Poland [e-mail] 8:00A.M.–6:00P.M.,M-F
Portugal [phone] [e-mail] 9:00A.M.–5:00P.M.,M-F
Spain 902 117 964 [e-mail] 9:00A.M.–5:00P.M.,M-F
Sweden [phone] emea_modemsu[email protected] 8:00A.M.–5:00P.M.,M-F
Switzerland +0848 840 200 [e-mail] 8:00A.M.–6:00P.M.,M-F
UK 0870 844 4546 uk_modemsu[email protected] 9:00A.M.–5:30P.M.,M-F
For current support contact information, go to the following web site: http://www.usr.com
Regulatory Approvals
FCC Declaration of Conformity
U.S. Robotics Corporation
935 National Parkway
Schaumburg, Il 60173
U.S.A.
declares that this product conforms to the FCC’s specifications:
Part 15,Class B:
Operation is subject to the following conditions:
1.this device may not cause harmful electromagnetic interference.
2.this device must accept any interference received including interference that may cause undesired operations.
This equipment uses the following USOC jacks:RJ-45
Radio and Television Interference:
This equipment generates, uses, and can radiate radio frequency energy. If this equipment is not installed and used in accordance
with the manufacturer’s instructions, it may cause interference to radio and television communications. The 24-Port 10/100 Ether-
net Switch has been tested and found to comply with the limits for a Class B computing device in accordance with the specifica-
tions in Part 15 of FCC rules, which are designed to provide reasonable protection against such interference in a residential
installation.
Caution to the User:
The user is cautioned that any changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
UL Listing/CUL Listing
This information technology equipment is UL-Listed and CUL-Listed for the uses described in this Installation Guide.