CyberPower Mobile Battery Powered 4-Port USB Hub (CP-H420MP)
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- USB 2.0 data transfer up to 480 Mbps
- Easy Plug and Play installation
- Works with all USB 2.0 and USB 1.1 Devices
- Built in batteries power for USB devices
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Top Customer Reviews
It is a USB Hub with rechargeable batteries that you may "switch on" if your device draws too much current from the hub to operate properly. It will NOT re-charge or power your iPod independently without being plugged into your computer's USB port. That would be "way cool," but it is NOT happening with this product. Some of the confusion is on the part of the manufacturer. Unlabeled switches are NOT helpful and the instructions included could be more clear. To clarify:
If the hub is plugged into the computer there should be a blue indicator lit. In regards to the tiny switch on the side which controls when the batteries are in use, up is ON, and down is OFF in relationship to the unit. If the labels read right side up (front or back) then when the switch is up it is ON and the batteries will NOT recharge as they are being used to supply current to the hub.
If the switch is up, (ON) the red light is lit and the red light means the batteries are in use and are NOT charging. Until you switch the batteries OFF they will not re-charge. (If you remove the batteries the red light stays lit without the batteries because the charging voltage is still at the battery terminals and at the light. I believe this is a design flaw, but maybe it was intentional as a reminder that the batteries are not recharging. Note "First Time Use" instructions for charging the batteries.
Although the instructions are poor with a lack of proper labeling on the unit, the product itself is actually innovative, and a good addition to a notebook computer bag.
For the product manual see: [...]
1) The precision of the case is quite poor. I was almost unable to open the battery cover. I finally used my Swiss Knife to modify the battery cover to resolve the problem.
2) The battery indicator is only passive (switch on/off indicator only) and cannot tell you if the batteries are in use or not. Even without the batteries, the indicator can be still on. I cannot confidently say that this device does not draw power from my vulnerable VAIO UX280.
3) When using the Sennheiser USB adaptor on this device, the audio quality was significantly degraded. I assume that this device cannot keep data flow fast enough.
Now, the build quality does seem somewhat cheap. I, like others, had difficulty putting the battery cover back on after inserting the batteries into the battery compartment. I'm using it on Vista, and Vista reports the hub and anything plugged into it as an unknown USB device. But the devices show up and work as they should, so have no idea what's causing the error. A quick search of the manufacturer's website doesn't list the product at all, and it appears everything about the product has been removed. The pages exist in Google Cache, not on the website itself. So don't expect a lot, if any, support.
In sum, it's an average product because of build quality and the possible lack of support from the company, assuming the hub is a discontinued product (note: it's not even listed in the discontinued products page for the manufacturer). But it does what it is supposed to do, as long as you understand what it is meant to do.
Most Recent Customer Reviews
Really, it was ok if your usb stuff did not need power.
Adding an extra keyboard or mouse is ok, but you need the battery power to run your other things. Read more
Imagine you have your USB device plugged into this thing for extra power and you need a bit of extra power for those surround sound USB headphones. Read morePublished on October 19, 2009 by Stephen P.
This item has never worked even with pre-charged batteries installed.
Amazon wanted more in return shipping than it cost; it is now only a hub and I use the batteries in other... Read more
Looking from Europe for a battery driven active USB Hub for portable pcs I found only this product (seems they closed their European distribution so I ordered directly from... Read morePublished on March 24, 2009 by Thomas Wellbrock
Everyone seems to have the same disspointment with this item. I too plugged my cell phone into it expecting to get a charge only to find nothing works without being plugged in to... Read morePublished on February 3, 2009 by R. E. Miller
You'd think that a "battery powered hub" would act like a powered hub when you switch the battery on... you know, like you plugged it in. Read morePublished on December 19, 2008 by M. Falcon
I have had several different 4 port hubs that I have used with different laptops and found all liking in one way or the other. Read morePublished on November 9, 2006 by A. Pippin