Not Reading Peripherals - i-rocks IR-4100 4-Port USB Hub
When I plug in my external drive and my clip drive into the i-rocks USB hub, the hub doesn't read / see them. When I plug the peripherals into the computer tower itself, they show up.
This is the second time I've had this problem. The first time, I just bought a new hub, and have used this current one for several years.
However, it seems that i-rocks hubs simply give up after a few years. I'd like a recommendation on a higher quality brand than i-rocks.
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Re: Not Reading Peripherals - i-rocks IR-4100 4-Port USB...
If your looking for a good quality USB hub, i would go with a Belkin.
They do cost more than most other hubs, but from the 8 years i have been at my retail store, they have had the lowest return rate of all that I have sold.
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If you're using USB for power then you either need a powered USB hub or the device must connect directly to the computer's USB port bypassing the hub.
If the USB hub doesn't plug in to the wall socket then it is not a powered hub. Basic USB hubs do not supply power to devices or charge an external device like a cell phone. The hub must be of the powered variety and plug into the wall before you can use it for things like this.
TIP: Get two USB hubs, one powered and one not. If you're using a USB hub for anything other than connecting a flash drive or your wireless keyboard and mouse receiver, get a powered one. Doing so allows you to charge multiple devices through USB and it will provide power to other peripherals like a laptop cooling pad, external hard drives, etc.
Most likely your USB hub is not capable of supplying enough power to support all your peripheral devices. USB devices are powered by 5 volts from the USB port. If you connect a hub to a USB port and connect a lot of devices to the hub, there is not enough 5 volt power to let all devices work. To fix this, most USB hubs have an external power option that when plugged in will supply extra power for any connected devices. If your hub does not have an external power option I would suggest you purchase a new hub that does have an external power supply.
sometimes usb hard drives will not work through a usb hub.
if the drive works connected to the laptop but not the hub then that's how you'll have to use it.
it's also possible the laptop cannot power both the hub AND the drive, in whaich case you'll need a powered hub (one you plug in to the mains).
Xp does not need them but check the information below before you panic.
I devised these simple steps that tend to remedy quite a few issues with most USB portable / external hard drives and devices (though not always)
A few things to check but assumes USB and Windows for other interfaces / operating systems similar steps may be adapted to suit.
1. Ensure it is connected directly to the computer to a USB 2.0 port not a USB 1.0 port as this can have effects on performance and reliability
2. Use only the cables that came with it NOT one that fits that may have been lying around or is longer. Not all USB cables are equal even though they should be)
3. Do not connect through an external USB HUB unless that hub is USB 2.0 AND has its own power supply.
4. Use ONLY the power supply that came with it if it has an external power supply Don’t use any other unless you know it has both the same voltage and current rating e.g. 12V 500mA anything rated below that would not work properly.
5. Always use the same port for connecting your devices. Some devices do not like being switched about. If switched they may want to install software / drivers again. This can be especialy true if you move a HUB to another port
If you checked and fixed anything there and still have issues then check your hardware from CONTROL PANEL / SYSTEM / HARDWARE.
Any exclamation marks by hardware need fixing before you investigate any further
Probably a power issue. Your new computer has less extra power capacity and the external drive is pulling from the USB port power.
What you need is a USB hub with an AC adapter that powers the hub and any devices that are connected to it from the external AC power adapter and NOT from the USB bus. In other words look for an external power adapter that plugs into the wall as well as into the USB port. Don't get a recharger for an iPOD as that will not do you any good. And don't get a hub that says "powered" or "external power" that does not have an AC power adapter because it is still sucking power off of the USB port.
Try shopping for a D-Link DUB-H4 High Speed USB 2.0 4-Port Hub. It is a good choice if you are not going to plug any USB 1.1 devices into it. Read the reviews for any device you choose.