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Volvo 94-00 USB, iPod and AUX supported!
USB, iPod+ AUX for most 94-00 Volvos
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Subaru 07-09 USB iPod adapters arrived!
Now your Subaru can sing ! USB, iPod+ AUX for 07-09 Subaru
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Nissan Altima '08 GROMified !
Watch the new video for Nissan Altima 2008 installation !
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Nissan Altima 08 USB/iPod Installation (youtube video)

Step-by-step installation instructions GROM USB2 adapter into Nissan Altima 2008. You will need philips screw driver, panel removal tool and around 15 minutes to do this.

Ford Focus 2008 stereo removal guide and adapter installation

Installation instructions and car stereo removal guide for Ford Focus 2008 MP3 stereo. You will need flat screwdriver, 10 mm wrench and wire crimp tool.

Toyota Matrix 2008 GROM iPod or USB adapter installation

Installation instructions for Toyota Matrix 2008 Single CD stereo. You will need flat screwdriver and 10 mm wrench.

Auxiliary adapters and Car2PC adapters review

Adapters are a category of product that allows two disparate devices with different connections to communicate. Car computers along with other electronic technologies, such as iPods, MP3 players and PDAs require adapters to work together with the car stereo. Such kind of adapter may be aux adapter, FM transmitter, cassette adapter and Car2PC USB adapter. Full article about car audio you can find in this article

An auxiliary input adapter is a small electronic device which makes a cd-changer capable car stereo into "think" that it has CD changer attached. In other words when you connect your car pc or MP3 player to car stereo, you will need this adapter if you want to get the high quality sound in your car.

Aux and Car2PC for MP3 player:

Auxiliary input adapters are mostly used by people who want to connect mp3 player to car stereo. Than they use the mp3 players controls in order to browse music, change track, volume and etc.

Car2PC adapter works exactly the same way as an aux if connected to the mp3 player. By connecting Car2PC adapter into CD changer port you'll get the best quality sound from your MP3 player.

Aux and Car2PC for car computers:

When you connect your computer to car stereo via auxiliary adapter you are getting the high quality sound.

The same quality sound you'll get if you connect car pc to car stereo head unit via Car2PC adapter.

However for car computer Car2PC adapter offers some more functionality:

  1. Car2PC adapter provides control commands to PC via USB connection. So whenever you press button on the car stereo you can translate that press into a particular command on PC.

  2. It also shows track information and track time.

  3. Also with the auxiliary adapters often when you turn the PC on it produces a noticeable "thump" in speakers. Car2PC USB adapter carries the exceptional anti "thump" protection.

Those functions are very convenient. You can install your pc in glove box, under the seat or in the trunk and don't have to reach over any time you want to browse the playlist, change track and etc. And you don't need the additional device to control the PC, such as IR/RF remote, wireless keyboard, LCD display etc.

The table below compares the Car2PC and auxiliary adapters for in car pc:

Quality sound

Direct control of the PC from car head unit

Track information display

Anti "thump" protection

Auxiliary adapter





Car2PC adapter





In conclusion:

Both Car2PC and AUX adapters, if connected to the MP3 player or computer will provide the highest possible quality sound.

Car2PC gives you the exceptional ability to control and operate your in car PC, and display the track information and track time on the stereo head unit.

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GROM iPod car adapter User's Manual
GROM AUX car adapter User's Manual
GROM USB Usage Manual
GROM Compatibility Guide
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