usb extension cable or power issues?

[charlie3]

i have a 15m usb extension cable and i need to run more than one device from it.

At the moment i can only run one thing, a mouse.

I also have a usb hub, from tescos and i was going to use it to connect multiple devices to the one usb cable/port.

I tried doing this but it although the light on the port came on none of the devices plugged in worked or showed and lights or signs at at all?? but the hub works fine when plugged into the computer with no extension.

i tried plugging in a keyboard in individually too, instead of the the mouse and it didn't work, so at the moment i can only run a mouse from that port??

I think it maybe to do with the lack of power from the one port but i am not sure. On the 4 port hub i have it does have a 5v power socket too(to allow more powerful device to run off it) but i don't have a power cable for it.

Will getting the power cable help me?

Anyone else had this problem?

 

[theog]

15m are you sure? (may be 1.5m)

Is the cable USB 1 or USB 2?

 

[pebbly]

the voltage drop on a 15m cable ,running at 5v will be approx 1.1 volt why is it required to be so long ? do you not have an alternative option ?

 

[charlie3]

it goes 1/2 way across my house, its 15 m alright

on amazon it said that its Certified USB 2.0,

by the way its 3 different 5m ones connected up together, this is it here

USB A male to A Female Extension Cable 5m: Amazon.co.uk: Electronics & Photo

i use the 1 pc in 2 different places, that's why it has to b so long and there are no other options.

 

[theog]

The maximum overall length of usb cable should not exceed 5 metres.

What you need is this:
USB 2.0 Active 5m Extension Lead : USB Cabling : Maplin

 

[charlie3]

what does this do that my current cable doesn't??

can i try powering the hub or is this my only option

 

[pebbly]

nice find theog

 

[charlie3]

is it powered in some way?

Active USB extension lead - allows a USB connection to be used over the usual 5m limit

that's all i have to go on

 

[charlie3]

my mouse works fine on the 15m cable

 

[theog]

Has a AMP on the end.

 

[theog]

my mouse works fine on the 15m cable

Very lower power.

 

[pebbly]

my mouse works fine on the 15m cable

charlie3, a mouse only requires about 5ma to run, most usb ports run at 500ma ,the longer the cable length the more ma you loose try powering the hub and see if that helps post back and let us know how you get on

 

[charlie3]

so this boosts the power without an extra power cable?

im guessing my mouse works as its so low power, yes?

so if i got this i could run a usb hub from the one port and connect a mouse and a keyboard to it?

this would replace one of my existing 5m cables or do i need 3?

is the power cable for the hub still an option?

 

[charlie3]

would this do?
eXpansys 5m USB Active Extension Cable: Amazon.co.uk: Electronics & Photo

 

[theog]

Active USB Extension Cable?

An Active USB Extension Cable is different to Passive USB Extension Cable in that with active USB extension cable the signal passing through the lead is amplified by the cable's built in repeater. This cable buffers the data passing through it (both upstream and downstream). This buffering ensures signal quality.

How Does It Work?

The 5m Active USB 2.0 Extension Lead can be cascaded so that it can bridge much longer gaps. Alternatively you can add more of the Newlink Active 5m USB 2.0 Extension Leads to give an even longer length. You can daisy chain up to five of these leads giving you up to 25m (depending upon the USB 2.0 device connected).

Anything Else?

The 5m Active USB 2.0 Extension Lead does not need an additional power adapter (current draw is only 5mA). It is 100 percent compatible with USB 2.0 electrical and timing specifications.

 

[pebbly]

would this do?
eXpansys 5m USB Active Extension Cable: Amazon.co.uk: Electronics & Photo

thats similar to the one theog posted try powering the hub first it will be the cheaper option

 

[charlie3]

so can i just get 1 and then conect 2 of my existing cables after that? this would still work?

 

[pebbly]

Active USB Extension Cable?

An Active USB Extension Cable is different to Passive USB Extension Cable in that with active USB extension cable the signal passing through the lead is amplified by the cable's built in repeater. This cable buffers the data passing through it (both upstream and downstream). This buffering ensures signal quality.

How Does It Work?

The 5m Active USB 2.0 Extension Lead can be cascaded so that it can bridge much longer gaps. Alternatively you can add more of the Newlink Active 5m USB 2.0 Extension Leads to give an even longer length. You can daisy chain up to five of these leads giving you up to 25m (depending upon the USB 2.0 device connected).

Anything Else?

The 5m Active USB 2.0 Extension Lead does not need an additional power adapter (current draw is only 5mA). It is 100 percent compatible with USB 2.0 electrical and timing specifications.

thank you theog thats something ive learned today

 

[charlie3]

well a 5v dc 1a power cable is 14.99 + postage so an active cable will be cheaper, i just want to make sure it will work with 2 other cables.

 

[theog]

so can i just get 1 and then conect 2 of my existing cables after that? this would still work?

NO,you will need three.

5m x 3 = 15m.