45
votes
Accepted
Crossover cable or straight through between multiple hubs/switches
Most modern hardware – Ethernet switches and computer Ethernet interfaces – implements Auto-MDIX, automatically choosing the correct mode for each physical connection. (This is now a required part of ...
- 470k
32
votes
Why are USB hubs mostly 4- and 7-port
The reason is twofold:
Four-port hub is a mere manufacturing and user convenience. There are one-port hubs (as in active USB2 repeaters), two and tree-port hubs (mostly in "mobile" segment). People ...
- 12.9k
13
votes
Is it important for a USB 3.0 hub to be powered?
I would strongly advise not to use any unpowered USB hubs (officially called "bus-powered hubs", and sometimes advertised as "mobile hubs") if you don't want communication/connect surprises, for the ...
- 12.9k
9
votes
Accepted
The Math Behind Lots of Devices on a USB Hub
Keyboard, mice, audio, and USB2 pen drives have no effect on operations of USB 3.0 channel - these USB2 devices go through ABSOLUTELY SEPARATE hardware, a USB 2.0 hub that is built inside the USB 3.0 ...
- 12.9k
7
votes
Crossover cable or straight through between multiple hubs/switches
Technically speaking, cross over cables are supposed to be used when connecting devices of the same “type” together. Like connecting 2 PCs together, or 2 switches together.
When connecting devices of ...
- 11.8k
6
votes
How to properly daisy chain network switches?
How to properly daisy chain network switches?
For a basic home network? Literally just plug them into each other!
Three unmanaged 5-port switches, one in each room the CAT3 cables terminate in, and ...
- 4,371
6
votes
Accepted
How to properly daisy chain network switches?
There is no practical difference between managed vs unmanaged in this regard – all switches regenerate the signal, and all of them use point-to-point full-duplex Ethernet connections. (It's hubs which ...
- 470k
6
votes
Accepted
Will a 10Base-T Hub slow down a 1000Base-T Switch?
The insertion of a 10Base-T hub will not have any significant difference on the parts of the network that are connected to your gigabit switch.
The parts connected through the hub will be limited to ...
- 71.6k
3
votes
Is it safe to use a powered hub while plugged in?
Yes. That is a powered USB hub:
https://en.m.wikipedia.org/wiki/USB_hub
A single USB port on your PC can provide only so much power. If you have alot of devices plugged into hub your single USB on PC ...
- 6,017
2
votes
Is it important for a USB 3.0 hub to be powered?
Most USB hubs can just draw current from the computer itself. Keep in mind that a computer's USB 2.0 port can normally supply only 5V @ 500mA so if you try to draw more current than that you will ...
2
votes
Can we add external power to usb hub to power keyboard and mouse?
USB is a complicated protocol.
Just soldering in some powerlines won't do it.
Your USB hub needs to support supplying power to external devices with a higher voltage than what a non-powered usb hub ...
- 63.1k
2
votes
Accepted
In house networking – hub or switch?
Hubs don't really exist anymore. They've been obsolete for ages.
Switches don't care what's connected to what port. They just ensure that all the connected devices can connect to each other. You can ...
- 62.1k
2
votes
Accepted
Why am I getting packet loss when pinging raspberry pis on subnet?
The problem stems from the fact that both of your Raspberry Pi's have the same MAC address. We can see this from the output of ip neighbor show where both 3.32 and 3.37 have the MAC address 00:e0:4c:...
- 379
2
votes
Does USB C hub/docking station cut the speed of USB ports it provides?
There's two kinds of USB-C docks. There's the kind that use USB 3.0, 3.1, or 3.2, which I will refer to as USB 3.x from here on, to communicate with the host. There's the kind that use Thunderbolt 3,...
- 1,535
2
votes
Could it be the length of my USB cable have caused multiple SD cards to fail?
When this question was raised, in the northern hemisphere it's winter, with low humidity and high chance of static electricity buildup. Though most devices, including SD cards, have some electrostatic ...
- 32.7k
2
votes
Is it possible to use a usb hub with a kvm switch?
I had exactly the same issue with a Corsair keyboard.
So I took a self-powered USB hub, plugged in BOTH connections of the keyboard (and the wireless mouse dongle). Then connected the USB hub to the ...
- 32.2k
1
vote
Is it safe to use a 2.5 amp 250v power supply cord with a USB hub rated for input parameters of AC100-240v 50/60 Hz and 1.8A?
Your USB-HUB includes an internal power supply with the specification AC100-240V / 50-60Hz (see text on second picture of your posted ad).
As long as the socket you plug in your newly bought mains ...
- 3,853
1
vote
Accepted
Do all USB 3.0 switches support connection of a large number of daisychained devices?
If that switch is indeed a simple electric switch that connects the USB data lines of either one or the other PC to the device-side port, then there should be no limit to the number of devices it can ...
- 4,732
1
vote
Accepted
Eject and re-recognize drives connected to a USB hub on a Synology NAS
Try:
USBDEVICE="3-1.1"
echo 0 > /sys/bus/usb/devices/$USBDEVICE/authorized
usleep 100000
echo 1 > /sys/bus/usb/devices/$USBDEVICE/authorized
for the first of the three disks listed in ...
- 1,313
1
vote
difference between transfer speeds through an USB 3.0 hub and without it
You can check if it supports USB 3.0 with UsbTreeView.
Make sure Options → Jump to new devices is enabled.
Connect the hub, it will be selected in UsbTreeView.
Inspect ports of the selected hub. ...
- 57.6k
1
vote
How to properly daisy chain network switches?
I have had the same problem as Jason who I presume has resolved his problem though I haven't seen mention of it.
I have just resolved my problem which was the result of many years wiring ethernet ...
- 11
1
vote
Using DSL router for hub only
If you disable DHCP on your router and set a the router's IP outside the DHCP range of your other router, it usually works as a makeshift switch.
You'll need to dig around on your router's settings ...
- 1,715
1
vote
Accepted
Use Tomato router as ethernet hub?
Yes. Simply decide which device - router1 or tomato - will be the DHCP server. Disable as needed, configure the other as needed, and you are done.
- 2,962
1
vote
Why am I getting packet loss when pinging raspberry pis on subnet?
When you start the initial ping, issue the following command:
ip neighbor show
This will show the ARP cache and give a hint if ARP resulution has taken place or not.
Just edit your question and put ...
- 154
1
vote
*Hardware* / Win 7 / External HDD + HUB / Correct shut down
Windows should be able to shut these drives off when there not in use, after a certain amount of time.
To do this:
Press Win+R and type powercfg.cpl
Click 'Change Plan Settings'
Click 'Change ...
- 3,401
1
vote
USB 3.0 Powered Hub disconnects every few seconds but works fine on USB 2.0
I have exactly the same hub,and I'm on a one year old HP Omen machine, and Windows 10 64-bit with all the latest updates..
I am having the same issue as the original poster of this topic..
My blaming ...
- 11
1
vote
Is it important for a USB 3.0 hub to be powered?
It all depends on what you are connecting to it. If you are just using usb flash drives or DVD drives or mouse/keyboard you should be ok with unpowered.
But if you want stuff to charge from it with ...
- 326
1
vote
How to "restart/repair" an USB port?
I'm not very computer knowledgeable, but I was having a similar problem with USB devices occasionally malfunctioning by receiving power but not working: e.g. mouse and/or keyboard lighting up but ...
- 11
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