Start Here Congratulations on your purchase of the NETGEAR™ Model EN104, Model EN108, or Model EN116 Ethernet hub. The hubs deliver standards-based, plugand-play networking solutions for small businesses, home offices, and lowdensity workgroups of larger companies. In this installation guide, all three hubs are referred to collectively as the Model EN104/EN108/EN116 hub. Each hub is listed individually when information is provided that refers to a specific model.
Package Contents Model EN108 hub Model EN104 hub 10 BASE-T HUB or 10 BASE-T HUB EN104 LINK Pwr Pwr Rx EN108 LINK Rx Col Col 1 2 3 4 5 6 7 8 or Model EN116 hub 10 BASE-T HUB Pwr EN116 LINK Rx Col 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Power adapter Mounting kit Installation guide, Warranty & Owner Registration Card, Support Information Card 8731FA Verify that your package contains the following: • Model EN104 hub, Model EN108 hub, or Model EN116 hub • Mounting kit (fo
Product Illustration Front Panel of the Model EN104 hub 10BASE-T ports 10 BASE-T HUB Pwr (Power) Col (Collision) EN104 LINK Pwr Rx Col Normal/Uplink push button Front Panel of the Model EN108 hub 10 BASE-T HUB Pwr EN108 LINK Rx Col 1 2 3 4 5 6 7 8 Front Panel of the Model EN116 hub 10 BASE-T HUB Pwr EN116 LINK Rx Col 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 8732FA Vista 10BASE-T Network Ports with Built-in LEDs The front panel of the Model EN104 hub has four RJ-45 10BAS
LEDs The table below describes the activity of the LEDs. Label Color Activity Description Pwr (Power) Green On Power is supplied to the hub. Col (Collision) Amber Blinking Data collision is occurring on the network. Note that occasional collisions are normal. Link (located on the top left corner of each vista 10BASE-T port) Green On The link between this port and the connected device is good.
Rear Panel The rear panel of the hub has a BNC port that you can use to connect to a backbone network or other PCs using thin coaxial cable. The rear panel of the Model EN108 hub and the Model EN116 hub also has an AUI port in addition to the BNC port. You can use the AUI port with the appropriate transceiver to connect the hub to a backbone network using thin coaxial cable, thick coaxial cable, fiber optic cable, or 10BASE-T wiring. The rear panel also includes a DC power receptacle.
Installation Procedures Prepare the Site Before you begin installing your hub, prepare the installation site. Make sure your operating environment meets the operating environment requirements of the equipment. Characteristic Requirement Temperature Ambient temperature between 0° and 40° C (32° and 104° F). No nearby heat sources such as direct sunlight, warm air exhausts, or heaters. Operating humidity Maximum relative humidity of 90%, noncondensing. Ventilation Minimum 2 inches (5.
Connect a PC to the Hub You can connect PCs, Apple Macintosh computers, UNIX workstations, or any device equipped with a 10BASE-T Ethernet interface to the RJ-45 ports on your hub by using twisted pair Ethernet cables. To connect any of the RJ-45 ports on your hub to a PC, use a regular straightthrough UTP cable. If you are connecting using port 4 on the Model EN104 hub, port 8 on the Model EN108 hub, or port 16 on the Model EN116 hub, set the Normal/Uplink push button to Normal.
Connect the Hub to a Network Cascading refers to connecting hubs together to increase the number of ports or the number of users supported on the network. The 10BASE-T ports can be used to cascade hubs together. The twisted pair cable extended from a 10BASE-T port (or UTP port) is called a twisted pair segment and can be up to 100 meters (m) in length.
Cascade the Hub The following illustration shows cascading hubs together in a hierarchical star through the 10BASE-T ports and indicates the setting of the Normal/Uplink push button on each hub.
Connect to a Network Using the BNC Port The BNC port on the rear panel of the hub is used for connecting to a thin coaxial segment. You can connect other Model EN104/EN108/EN116 hubs, servers, workstations, or other devices to the BNC port. A BNC-T connector is inserted in the port, and the 50 Ω terminator terminates the connection at each end device. By using the BNC port for cascading, you treat each connected hub as just another node on the coaxial segment.
Connect to a Network Using the AUI Port The AUI port on the rear panel (found only on the Model EN108 hub and the Model EN116 hub) is normally used for connecting a thick coaxial segment. With the right type of transceiver, you can use the AUI port to connect to most types of network media, including 10BASE-T twisted pair cable or thin coaxial, thick coaxial, and 10BASE-FL fiber optic cables. Note: All transceivers connected to the AUI port must have the signal quality error (SQE) test function disabled.
Verify Installation To complete the installation, connect the power cord first to the power receptacle on the hub rear panel and then to the power outlet on the wall. When power has been applied to the hub: • The green Pwr (Power) LED on the front panel is on. • The green Link LED on each connected port is on. • The green Active LED on each connected AUI port is on. • The green Active LED on each connected BNC port is on. If encounter any problems, refer to “Troubleshooting” on page 4.
Troubleshooting Symptom Cause Solution Amber Col LED blinks. There is data collision on the network. Data collision is normal on Ethernet networks. No action is required. Amber Col LED blinks excessively. There is data collision on the network because the network is extremely busy or defective devices are connected on the network that cannot detect network traffic or collision. Make sure connected devices are operating in half-duplex mode.
Network Interface Cards Make sure the network interface cards installed in the workstations are in working condition and the software drivers have been installed. Hub Integrity If required, verify the integrity of the hub by resetting it. Turn power to the hub off and then back on. If the problem continues and you have completed all the preceding diagnoses, contact NETGEAR Customer Support. For the phone number of the representative in your area, refer to the Support Information Card.
Technical Specifications General Specifications Network Protocol and Standards Compatibility IEEE 802.3i, 10BASE-T, 10BASE-2, 10BASE-5 Ethernet Data Rate 10 Mbps, Manchester encoded Interface 10BASE-T ports (RJ-45), BNC port, AUI port (Model EN108 hub and Model EN116 hub only) Max. Power Consumption Model EN104 hub 11.0 W Model EN108 hub 16.5 W Model EN116 hub 20.5 W DC Output Voltage (Power Adapter): Model EN104 hub 7.5 V DC@ 1A max. Model EN108 hub 12 V DC @ 1.2A max.
Replacement Power Adapter If, for any reason, the power adapter for any of the hubs fails, contact NETGEAR immediately to order a replacement adapter. Use the following table when ordering a specific power adapter. Order code EN104 PWR-024-001 Power adapter (7.5 V DC, 1 A), North America PWR-024-002 Power adapter (7.5 V DC, 1 A), Europe PWR-024-003 Power adapter (7.5 V DC, 1 A), United Kingdom PWR-024-004 Power adapter (7.5 V DC, 1 A), Australia PWR-024-005 Power adapter (7.
© 2000 by NETGEAR, Inc. All rights reserved. Trademarks NETGEAR™ is a trademark of NETGEAR, Inc. Windows® is a registered trademark of Microsoft Corporation. Other brand and product names are trademarks or registered trademarks of their respective holders. Information is subject to change without notice.
NETGEAR, Inc. 4500 Great America Parkway Santa Clara, CA 95054 USA Phone: 1-888-NETGEAR E-mail: Support@NETGEAR.com http://www.NETGEAR.
