USB 4-port 500mA Car Adapter

Pros: 4 Built-in USB ports and 1 DC output for charging mobile phone [5 adapters included] There is also a fuse attached to it to prevent power surge thus damaging your USB charger. Power LED shows that it is working fine.

Cons: USB slot too stiff. The mobile phone adapters does not have adapter for k750.

Other: It worth buying should you need USB slot to charge your mobile phone or PSP outdoor.

Pros: This is a great product. - Charges or powers 4 USB devices simultaneously - Broadcasts any audio source to your FM radio (via 1/8" stereo plug). - Sound is clear (provided the fixed frequency of the device is clear in your current location) - Was able to power a number of devices without apparent overload or noticeable heat.
I've used it with my blackberry and it makes for a workable hands-free device.

Cons: Would be better if it had tunable FM frequency selection. The one I received is fixed at 107.5.
They could combine this with a set of adapters for non-usb devices like cellphones.

Other: Buy it.

Pros: Can charge up to 4 devices simultaneously.
Has a built-in, replaceable fuse.
Includes FM transmitter function.
Good for charging sat nav unit, mobile phone, PDA etc.

Cons: FM transmitter is fixed at 107.5MHz, and I couldn't get it working.
I didn't receive any cellphone charger tips.

Other: If you want to be able to charge your USB devices while you're on the move, it's a good thing to have.

Pros: -4x usb ports plus a round powerplug on the side
-fused input with a 7.6 amp fuse (to be more exactly a F7.6AL250V)
-uses the MC34063A DCDC-converter http://www.datasheetcatalog.org/datasheet/motorola/MC34063A.pdf
-better made then i expected from "made in china". the board looks really good (see pictures)

Cons: the adapter cable is a little short. its just 30cm long

Other: the adapter powers everything i need in the car (PDA, Cellphone, GPS Receiver..) i had no problems so far and i am confident i will stay this way.

Pros: * WOW! 4x USB outlets to power/charge the ever increasing number of devices being installed in my car!
* Charges my Nokia 6120, and my wife's older 7250i phone with the supplied plugs.
* Keeps the kids Nintendo DS games running for EVER!
* Powers my GPS, so no additional 12V socket needed there now too!
* Charges my camera too! How cool is this thing!

Cons: * Plastic feels flimsy.
* None other than that.

Other: * If you have a heap of USB powered crap in your car, and it's impractical to store a laptop under a seat just to power it all, buy all means buy this device, you won't be sorry.

Pros: Come with 4 USB ports & 1 'multi-connector' charger.
Built Quality is OK (overall)

Cons: Not enough power to charge 2 mobile phone in the same time.
I'm charging Blackberry BOLD 9000 + Nokia N70 Music Edition in the same time.. Blackberry was fine, but nokia isn't
The quality of the 'multi connector' is not good, sometimes I have to move it a bit to get it works.

Other: cheapest car charger I ever have.
It works, but mine has some issue.

Pros: It's working. 4 USB sockets + 1 phone dedicated. Build quality is quite ok. It's worth it's money.

Cons: First of all - it's noisy. Nobody mentioned it before, but where circuits are operating you can here hi-tone noise - really, really annoying (even radio can't distract from that noise). When you think for a while, it's quite normal for that kind of DC-DC converters - but... did I'v mentioned it's annoying? :))
Cable for charging mobile phones is definitely too short (I use other USB charger), and small Nokia connecter does not work either (it's to small and you have to bend it, to connect properly inside Nokia socket).

Other: Overall I think it's good device. It uses DC-DC converter with better efficiency that common resistors converters. I haven't noticed lack of power with 3 devices plugged in. So If you need USB in your car/yacht etc. (and you are a bit deaf ;) - it's a joke :D ) - it's worth to buy this one.

Pros: - Four USB ports AND an additional power charger port.
- It's the same size as the regular-sized single-USB-port charger that sells for far more in local stores.
- The phone adapters provided. I've only used the SonyEricsson and mini-USB plugs, but they work great for my SE phone, Blackberry, and a whole host of USB devices.
- The build quality is quite acceptable.

Cons: - The high-pitched noise when the current draw is high. I haven't figured it out yet, but it seems to happen if the total current draw exceeds some certain amount.
- It fits rather loosely in the cigarette lighter plug in my car. Not unacceptably loose, but it seems to require much less force to dislodge than just about every other cigarette-lighter chargers that I've ever used.

Other: It's cut down on the clutter in my car by quite a bit. I have managed to charge my GPS, two phones, and a PMP all at once without any problems with this charger.

Pros: So many little things in need of power while you drive and almost all of them can be plugged through USB. So this was supposed to be really nice indeed. But it isn't.

Cons: And it's not nice because it doesn't work. I think only one of the ports worked on mine. And even if all 4 worked, I think it wouldn't deliver enough juice to actually charge the batteries of say... 2 cells and GPS for example.
And the build quality is not the best either. Feels cheap, is cheap, and that would be enough if it *DID* it's job.

Other: Don't know, it's your call. Mine was faulty.

Pros: it has an expensive price imo. It could be a lot cheapper. 4 USB orts + 1 port with cell phone charger connectors.
Really handy to charge things.

Cons: the power it's not suficient to charge many devices at the same time. which makes this product a bit stupid. if you can't charge 5 things at the same time why you have 5 ports?
you can charge a maximum of 3 (with difficult).
For this price more connectors should be provided.

Other: not satisfied. the item is expensive and it doesn't work properly.