D-Link DFE-904 User Guide
D-Link DFE-904 - 10 /100 or 4-RJ45 Dual Speed SOHO Mini-Hub Manual
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UPC - 790069213014
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- D-Link DFE-904 | User Guide - Page 1
DFE-904 Ethernet/Fast Ethernet Dual-Speed Hub User's Guide Rev. 01 (November 1997) 6DFE904...01 Printed In Taiwan RECYCLABLE - D-Link DFE-904 | User Guide - Page 2
such as translation, transformation, or adaptation without permission from D-Link Corporation or D-Link Systems Inc., as stipulated by the United States Copyright Act and, if not installed and used in accordance with this guide, may cause harmful interference to radio communications. Operation of - D-Link DFE-904 | User Guide - Page 3
use and service, for the following lengths of time from the date of purchase from D-Link or its Authorized Reseller: Product Type Network adapters Unmanaged and managed hubs (10 Mbps) Unmanaged hubs (100 Mbps) Managed hubs (100 Mbps) Unmanaged and managed dual-speed hubs (10/100 Mbps) * Power - D-Link DFE-904 | User Guide - Page 4
, FIRE, LIGHTNING OR OTHER HAZARD. LIMITATION OF LIABILITY IN NO EVENT WILL D-LINK BE LIABLE FOR ANY DAMAGES, INCLUDING LOSS OF DATA, LOSS OF PROFITS, COST LIMITATION WILL APPLY EVEN IF D-LINK HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. IF YOU PURCHASED A D-LINK PRODUCT IN THE UNITED STATES, - D-Link DFE-904 | User Guide - Page 5
Description 1 Unpacking and Setup 3 Identifying External Components 4 Front Panel 4 Side Panels 6 Back Panel 7 Installing the Hub 9 Single-hub Network 9 Multi-hub Ethernet Network 11 Two-hub Fast Ethernet Network 13 Mounting 14 Horizontal Mounting 15 Vertical Mounting 15 Powering Up 17 - D-Link DFE-904 | User Guide - Page 6
- D-Link DFE-904 | User Guide - Page 7
the instructions in this guide carefully to ensure that your DFE-904 will provide many years of trouble-free operation. The D-Link DFE-904 dual-speed Ethernet/Fast Ethernet hub is designed to allow easy migration and integration between 10-Mbps Ethernet and 100-Mbps Fast Ethernet. The DFE-904 hub - D-Link DFE-904 | User Guide - Page 8
10-Mbps Ethernet and 100-Mbps Fast Ethernet are administered by the International Institute of Electrical and Electronics Engineers (IEEE). The DFE-904 conforms fully to IEEE standards for hubs of its type. As a 10-Mbps Ethernet hub, the DFE-904 instructions in this guide very carefully. 2 - D-Link DFE-904 | User Guide - Page 9
end nodes; hubs such as the DFE-904 are not. The DFE-904 is the type of hub technically known as a multi-port repeater or repeating hub. Unless preceded by the word switching, the word hub in this guide always refers to a repeating hub. When used as a 100BASE-TX Fast Ethernet hub, the DFE-904 can - D-Link DFE-904 | User Guide - Page 10
This User's Guide Inspect the hub and all accompanying items. If any item is damaged or missing, report the problem immediately to next chapter. Front Panel On the DFE-904's front panel are the hub's Speed, Link/Rx, and Collision indicators. The Speed and Link/Rx indicators are all green light- - D-Link DFE-904 | User Guide - Page 11
or 10-Mbps operation. Hub speed is set using a sidepanel switch described in the next section. The Speed indicators also serve as power indicators. One or the other should shine whenever the hub has power. If neither one lights up when power is applied, contact the dealer for service. The Link/Rx - D-Link DFE-904 | User Guide - Page 12
connected to the same hub or to uplinked hubs are in the same collision domain; end nodes linked through a bridge, router, or switching hub are in separate collision domains. In this manual, the word network always refers to a collision domain. Side Panels On the DFE-904's right-hand panel are - D-Link DFE-904 | User Guide - Page 13
the switch with a fingernail or pencil tip. Slide the tab toward the front of the hub for 100-Mbps operation and toward the back for 10-Mbps operation. The setting can be adjusted at any time, whether the hub is on or off. The air inlets on the right side and the fan outlet - D-Link DFE-904 | User Guide - Page 14
with the DFE-904. Category 3, 4, and 5 cables are all acceptable for 10 Mbps; only Category 5 and equivalent cables are acceptable for 100 Mbps. Network cables can be attached and detached at any time, whether the hub is on or off. Read the relevant connection instructions in this guide carefully - D-Link DFE-904 | User Guide - Page 15
of this chapter explains how to make connections for a multihub network that runs at 10 Mbps. If your network runs at 100 Mbps and you wish to connect another 100BASE-TX Class II hub to the DFE-904, see the third section of this chapter. Caution: A twisted-pair network cable can ordinarily - D-Link DFE-904 | User Guide - Page 16
this guide. Make sure all requirements for safe, correct operation have been met. Make connections for each end node as follows: 1. Double-check to make sure the end node will access the network at the same speed as the hub and your other end nodes (10 or 100 Mbps). Check the setting of the DFE-904 - D-Link DFE-904 | User Guide - Page 17
in this guide. Make sure all requirements for safe, correct operation have been met. Important: This section describes how to create a multi-hub 10-Mbps network in which all the hubs are DFE-904 units. If you have 10BASE-T hubs of other kinds as well, see those hub's manuals for instructions on - D-Link DFE-904 | User Guide - Page 18
the Uplink jack on hub B unused. The following figure shows a two-hub 10-Mbps network on which all possible connections to both hubs have been made. Connecting Additional Hubs To add a third and a fourth hub to a 10-Mbps network, connect them between hubs A and B. The four hubs on the left in the - D-Link DFE-904 | User Guide - Page 19
uplink connections between any two end nodes. The following illustration shows a maximum-extent 10-Mbps network created with DFE-904 units. Two-hub Fast Ethernet Network When set for 100-Mbps operation, the DFE-904 can have a single uplink connection to another 100BASE-TX Class II Fast Ethernet - D-Link DFE-904 | User Guide - Page 20
- On a 10-Mbps Ethernet network, every cable can be up to 100 meters (328 feet) long. If hubs are uplinked together, there can be no more than three uplink connections between any two end nodes. - On a 100-Mbps Fast Ethernet network with no uplink connection (that is, just the DFE-904 and four end - D-Link DFE-904 | User Guide - Page 21
between any two end nodes must not exceed 205 meters (672.4 feet). If both hubs have end nodes connected through 100-meter-long cables, the uplink cable cannot be more than 5 meters (16.4 feet) long. Horizontal Mounting Prepare the hub for desktop or tabletop mounting as follows: 1. Make sure the - D-Link DFE-904 | User Guide - Page 22
Remember that the hole positions are reversed as in a mirror image when the hub's base faces the wall instead of facing you. 3. Hammer the supplied wall Let the screwheads protrude enough to enter the holes in the hub's base. To mount the hub, position it so the screwheads enter the holes in its base - D-Link DFE-904 | User Guide - Page 23
powered up in any order. Before powering up the DFE-904, make sure that- - the hub is set to work at the speed at which adapter into a standard wall outlet and plug the adapter's barrel connector into the DFE-904's DC power jack. When power is applied, the Collision indicator and the indicator - D-Link DFE-904 | User Guide - Page 24
m, max. cabling between stations 500 m. Fast Ethernet-Category 5 or better UTP or STP cable; max. cable length 100 m, max. cabling between stations 205 m. 10 Mbps, 100 Mbps, collision, port link/activity. External power supply with 9V DC/1A output. 4W. 110 × 75 × 29 mm (4.33 × 2.95 × 1.14 in.) 500
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DFE-904
Ethernet/Fast Ethernet
Dual-Speed Hub
User’s Guide
Rev. 01 (November 1997)
6DFE904...01
Printed In Taiwan
RECYCLABLE