Its an adaptor for putting a LG-8164 (PC) drive into your Xbox as a replacement for an old broken/error prone DVD drive, usefull eh? well ok it wont read original discs yet but for those of you running your homebrew from CD or DVD this is a good thing as it'll bring you faster load times and they are working on a firmware to load original discs.
The bad news? well you will have to open the drive & do a little soldering but it doesnt look like too much and since the old LG 8163b (the previous drive that could be modded) isnt made anymore this is the next best thing.
The advantages to using this? I'm glad you asked as here they are:
* The Xbox disc reading ability will greatly improve
* Full support; CD-R, CD-RW, DVD-R, DVD+R
* Faster read speeds, which means faster load speeds
* Cheap solution
* Compatible with all Xbox versions v1.0-1.6x
Read more about it & see what soldering is needed at the homepage. If you like the idea you can get them from Yoxbox Europe or patxbox360 Canada & America.