The tag has no wiki summary.

learn more… | top users | synonyms

17
votes
5answers
5k views

Can two drives connected to a USB hub bypass the computer when sharing data?

If I connect two usb drives to an external USB hub and I copy data from one drive to the other, does the data go through computer? Or will the data be managed by the USB hub? Does this have some ...
17
votes
5answers
7k views

Is there any benefit to plugging a USB 2.0 device into a USB 3.0 port?

I know USB 3.0 is almost entirely backward-compatible, and I know that it introduces a new speed that USB 2.0 devices aren't capable of, but is there any advantage to having a USB 2.0 device in a USB ...
3
votes
1answer
95 views

Is using a powered USB hub Raspberry Pi DC power and USB data a good idea? Or does it create an odd, circular dependency that could blow the hub?

I have Raspberry Pi model A which has only one USB port. So I bought the cheapest electrically powered USB hub (AC adapter that has an output of DC 5V at 1000 mA) I could find—kind of in the spirit of ...
3
votes
2answers
1k views

Computer doesn't boot when a wireless keyboard/mouse is connected through a USB hub

I'm using a wireless keyboard and mouse (MS 6000). When the wireless receiver was connected directly to the computer case everything worked fine (I had to enable some USB related setting in the BIOS ...
2
votes
2answers
9k views

How many devices can be plugged into a USB hub, and how is power distributed amongst them? [closed]

Is it possible to connect a USB hub to a hub that is connected to a hub and a hub and.. and.. and to a laptop? I was thinking there are bound to be some "overhead" like if without the hub we have ...
2
votes
1answer
466 views

What makes a good and reliable USB Hub? [closed]

I've gone through 2 USB hubs for my laptop and they both seemed to be unreliable. Both of these USB hubs are not powered. If I plug both keyboard and mouse, one of the devices won't work. Or if I ...
2
votes
2answers
1k views

How to test power capabilities on USB 3.0 hub?

Salvete! I recently purchased a USB 3.0 hub and, since it didn't come with a power adapter, I acquired one separately. I am attaching it to a computer with a low-output power supply, so it is ...
2
votes
2answers
2k views

Ten external hard drives through a USB hub

I have bought a 10 port USB Hub with power, and attached that to one port at the back of my PC. Connected to the hub are ten external hard drives. Is this set-up safe, or can it do damage to my ...
2
votes
1answer
366 views

Why does my data card not work with USB-hub for 2G network

My data card works fine with 3G networks. My laptop has only two USB ports and both are too close to connect a wide data card and a hub for mouse and keyboard. As for the make/build: Windows ...
2
votes
0answers
188 views

Why would attaching a USB hub affected the performance on a Mac?

My brother-in-law bought a 10 port active USB hub and connected it to his iMac(it's couple of years old). Over the course of about a week he noticed that his computer's performance has slowed quite a ...
2
votes
0answers
307 views

USB Hub vs. Dockinstation USB vs. Laptop USB

I recently had thougts about my current setup in my office, especially about the UBS ports distribution. Here's my setup: I have a Lenovo T410 docked to a Lenovo Dockingstation Series 3, that ...
1
vote
3answers
534 views

Need a quality USB hub that is able to power external hardware [closed]

What is the most useful USB hub that you have had experience with. I have a Seagate FreeAgent Go that is powered by USB and I want to get a USB hub that is able to provide me with more USB ports and ...
1
vote
1answer
173 views

Will connecting USB controllers to a hub with extension cables cause interference, signal loss or even input lag?

I'd like to connect 3 devices to a USB hub. The USB hub is then connected to my PC with an extension cable. Each device would need an extension cable of approx. 1m, which is then connected to the ...
1
vote
3answers
2k views

MIDI Over USB-Hub: Latency?

I am connecting an NI Maschine (hardware) over USB to my Macbook Pro. Right now I'm using a USB 2.0 powered hub (by DLink or Belkin, depending). It seems fine, but these things can be hard to detect. ...
1
vote
1answer
726 views

Powered USB Hubs vs. non-powered ones for external hard drives, sound cards, etc?

I am looking into getting a D-Link or Vantec powered USB hub, but I am not sure if it will solve my current problem - I have an external HD dock (for 2 hard drives), external sound card (Presonus ...
1
vote
1answer
144 views

Data Integrity with Desktop External HDD connected to daisy chained Dell Monitor USB hub

I have two Dell U2412M monitors, both of which have USB hubs built into them. I have one of those hubs connected to my MacBook Pro directly, and that hub has a webcam plugged into it. I want to ...
1
vote
1answer
310 views

inconsistent USB connection between mobile and computer - lack of power or faulty hub?

I am using a four port cheap USB hub, plugged into a GoFlex Home on one side, with a Micromax Q5 mobile on the other. The only other device plugged into the hub is a flash drive, which functions ...
1
vote
1answer
278 views

Is a 2-Port USB 2.0 Hub faster than a 7-Port USB 2.0 Hub

I have a computer with about 6 external hard drives connected, however it's died and i'm replacing it with another computer with only 4 USB 2.0 ports. I have a 7 Port USB 2.0 Hub that is connected to ...
1
vote
0answers
80 views

USB hub advertised as 2.0 actually works as 1.1

I bought this USB hub http://www.ebay.com/itm/281298880612 which is supposed to be a USB 2.0 hub. When I plug a pendrive in to the hub, Windows gives the message "This device can perform faster if you ...
1
vote
0answers
303 views

USB Hub powers down in sleep mode on Win 7 x64

I would like the USB hub to remain on in sleep so I can wake up the laptop from an external keyboard and mouse. I have set all the device drivers by unchecking allow this device to be powered down ...
0
votes
2answers
566 views

USB hub that doesn't suck? [duplicate]

Possible Duplicate: What makes a good and reliable USB Hub? Hi, It could be just my bad luck, but it seems like whenever I have used USB hubs they are completely useless. For example, my ...
0
votes
1answer
3k views

Can't a USB hub power keyboard and mouse at same time?

I'm trying to use a Dell mouse and keyboard via a single USB port using the USB splitter hub, but the devices seem to misbehave. Just one of the devices work when I connect both. I figured out it's a ...
0
votes
2answers
111 views

MacBook Air Needs a USB Hub

I'm suffering from USB creep and need the maximum number of hubs possible. Should I get a USB 3.0 rated hub even if my devices are not USB 3.0? In other words, does the added speed of 3.0 allow the ...
0
votes
1answer
5k views

Driver required for USB-3 hub support on Windows 7?

I just purchased a Koutech HU-430 4-port USB SuperSpeed hub. When plugged into a USB-3 port using the included USB3 A/B cable, Windows detects it as a "Renesas Electronics USB 2.0 hub". Does this ...
0
votes
1answer
251 views

USB 3.0 hub seems to freeze startup

When my USB 3.0 hub is connected, my Ultrabook has start-up problems. The Windows logo appears momentarily then the screen goes black and freezes completely. If I disconnect the USB 3.0 hub and force ...
0
votes
1answer
332 views

USB 3 Hub to drive dual monitors from Laptop @ 2560 x 1440

Taking this USB 3.0 Docking Station with Dual DVI/HDMI/VGA Video (sd3500v) as an example. I'm trying to find out what hardware configuration/spec a laptop would require to allow it to drive two Dell ...
0
votes
1answer
216 views

Differences between “industrial” and “home” usb hubs? [closed]

I suspect that some of my USB issues are related to the hub that I am using, and I did some research on "industrial" USB hubs. So far, it looks like these hubs offer the following major differences: ...
0
votes
1answer
8 views

speed of USB 3 when connected to several USB 2 devices

I am wondering what is the speed of a USB 3 hub when 2 or more USB 2 are connected to it? to be more specific: Assume that I have a USB 3 device which is connected to say 2 USB camera. Each USB ...
0
votes
0answers
42 views

USB host controllers broken on every reboot

Something happened (including Windows Updates?) and now every time I reboot, most of my USB host controllers/root hubs are not working: The broken ones say: This device cannot start. (Code 10) ...
0
votes
1answer
68 views

Why does my generic USB hub not allow my PC to find a second plugged-in flash drive?

On my Dell Model i3531-1200BK (running Windows 8.1) I am using a 4 slot (no name) generic USB hub that works fine with one flash drive. But when a second flash drive is inserted, the laptop starts ...
0
votes
0answers
229 views

USB hub damages an external hard disk (and storage devices) on use attempt

I recently bought a USB hub because I find myself needing more than just two USB ports on my prebuilt laptop. However I come to the problem that when I use an external hard disk with it I cannot ...
0
votes
1answer
39 views

Maximum number of keyboards you can attach

I need to attach 16 keyboards to a computer, to use as a game show buzzer system. Is that possible? I know the theoretical maximum number of USB devices allowed is (2^7)-1=127 but will there be any ...
0
votes
0answers
335 views

Can I power a nexus 7 through a powered USB hub?

I am building a setup to use my Google Nexus 7 as a SNES. I have the games figured out, and my plan is to plug a USB hub into my OTG cable which is plugged into the device. In the hub, there are two ...
0
votes
1answer
360 views

Do USB devices draw current from the computer if a powered hub's current “runs out”?

I have a few heavy duty devices and a powered hub and I wonder what's the flow of current in those things.
0
votes
2answers
322 views

USB Hub questions

I have a couple questions about usb hubs: If I only have one device connected to it, is the speed as fast as if I plugged it in directly to computer? If I have 2 flash drives plugged into and copy ...
0
votes
0answers
164 views

Why doesn't my computer see all USB devices (27 3G modems)?

I have a (Dell) laptop with 3 USB ports. There are two USB hubs connected (13 ports each, hubs are powered by external electric source); so in total there are 27 USB ports (13+13+1). Each port has a ...
0
votes
1answer
206 views

Installing an internal Delock USB hub

I am installing an internal Delock 4-port USB 3.0 hub, so that I can have USB ports on the front panel of the machine. I have plugged in the 4-pin cord, but I have a blue cord that has a USB contact ...
-1
votes
1answer
1k views

What is polarity for an unmarked USB hub?

On my USB hub where the power supply plugs in, the polarity is unmarked (I got it used, from my brother's friend). I need to know what the polarity should be. I don't think it makes a difference ...
-1
votes
1answer
995 views

Only any one port in the 4 port usb hub is working

I recently bought a 4 port usb hub. I happened to find that only any one port among the 4 ports are working in my laptop. (i.e. all ports are working but only one at a time) Brand of my laptop is ...
-2
votes
2answers
89 views

What are the implications of plugging a USB 2.0 hub into a USB 3.0 hub [closed]

I have a notebook that when im at home i use for work with a keyboard/mouse, a monitor (the monitor is HDMI) and some peripheals. Well, i already have a cheap USB 2.0 powered (5v/1A) hub with 7 ...