Question about Allied Telesyn CentreCOM MR820TR (AT-MR820TR-15A) Networking Hub

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HUB failure I can't get a connection from my hub to my components

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Re: HUB failure

Are you using the 10Base2 coax outlet, the AIU port or the 8port 10BaseT outlets? Also are you using port #8 which is an uplink port and not meant to be connected to another computer? This hub, although rather old, has auto MDI/MDI-X which can accept either straight or cross-over cabling on ports 1-7 and a switchable port #8. Just make sure your cables are pinned correctly. Otherwise, hubs are meant to JUST work. Although this particular hub MAY prevent/hinder DHCP requests (it does prevent DHCP type Boot LAN requests), which means you might want to try connecting between two computers who have a static IP address and are on the same subnet. ZT3000 "Beta tester of "0"s and "1's"

Posted on Aug 21, 2007

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I use a Dynex USB 2.0 4-Port hub in a mailing machine. I keep getting brand new hubs that quit and won't power up. Leaving all the same cables and plugging in a new hub and it powers up. I am also...

You are probably putting too much current through the hub. 1 USB port is good for 500mA, and since this splits 1 into 4, you're working with 125mA per device if you have 4 things connected. Find a powered hub instead.

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Can i connect a hub to switch which is already have many other connection and also can i connect two or more than 2 systems with that hub

Yes, you can connect a hub to a switch with as many devices as the hub has ports for. You will have a bottleneck at the port the hub links to the switch but if the demands are low then you probably won't notice any significant degradation of speed. Move your printers on to the hub ports to free up switch ports for PCs, servers and router connection.

Oct 18, 2010 | 3Com OfficeConnect TP800 8-Port Ethernet...

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I just got this dynex 4 port ethernet hub and i have comcast wired internet . and i want to hook it up to my xbox 360 and my computer but , it wont let me . when i try to get xbox live it says network...


You need a router not a hub or a switch. with the help of the router you can share the comcast cable internet on multiple devices. A hub or a switch can not do this.

Get it replaced with a router. You can buy Linksys or Netgear router.


Aug 17, 2010 | Dynex 4-Port 10 Mbps Ethernet Hub

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How do you hook up a Dynex Ethernet Hub

If your hub has 4 or 5 connectors, connect one port to your router. This device will NOT work when connected to your cable modem, as the hub does not manage IP addresses like a router does. Hope this helps ... the remaining ports will feed internet, but not provide Internet addresses to a computer.

Nov 08, 2009 | Dynex 4-Port 10 Mbps Ethernet Hub

1 Answer

Usb hub unsafely unplugged from notebook. now

do one thing boot ur vista without usb hub then go to device manager remove your usb drivers of the hub disconnect the hub from computer, restart notebook, then connect the hub back when windows boot let vista to install the driver of that hub, after that connect your devices one by one ok let me know what happen? :-)

Aug 21, 2009 | Belkin (F5U237) 7-Port USB Hub

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How to check whether its working or not working?

If your PC LAN Card is active just connect the switch with Straight cable - & --you will see one yellow box in ritht side corner down to monitor screen...where the time appears.....also you can check in the Network Connections Folder. Or Right Click My Network Places> Properties> You will see local area Network....> Connected...then it is working if disconnected it's not working....Good Luck

Jul 29, 2009 | D-Link DES-1008D 8-Port Ethernet Switch...

1 Answer


When the computers are powered up and connected to the D-Link hub,
the computers that are connected to the hub will light up the various LEDs on the hub to indicate which port on the hub is active. Also that computer's network card Link LED light should be on to indicate it is connected to the hub.
If the hub's LED is off and the corresponding computer's network card Link LED is off then the network cable is faulty, or the network card is faulty (or the network card driver needs installing) or the port on the hub and/or hub is faulty.
To determine which item is faulty, swap network cables around, swap computers to different ports on the hub etc

Jul 29, 2009 | D-Link DES-1008D 8-Port Ethernet Switch...

2 Answers

Hub not working properly

Maybe your hub port is not using auto sense port.

Aug 30, 2008 | 3Com (3C16593BN) 24-Port Ethernet Hub

2 Answers

My network switch LEDs all blinking even without LAN connected


The LEDS blinking normally would indicate reset internally or when the unit has just been powered on. Continous LEDs lighting up or flashing with or without a connection is an indication of extensive hardware failure. This could have been brought about by a near lightning strike, a power surge or simply component failure. Unfortunately the repairs is not economically reasonable and therefore a replacement might be better off. Sorry.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Jul 28, 2008 | Cnet PowerFAST Networking Hub

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3 com hub tp4 home network setup failure

There are several possible problems here, and more information is needed to identify which one is causing trouble. First, are you using a high speed dsl or cable internet connection? ...or is your Internet connection a dial-up phone line? This will have a significant effect on how your cables should be connected between the hub and the computers. Windows typically defaults to a 169... address when it is not properly connected to a shared network connection.

Jan 08, 2008 | 3Com HomeConnect (3C19261) 5x10/100 Mbps...

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