Lot details: Xbox 360 S XDK Sidecar. Model 1485. Attachment for Xbox 360 Slim XDK. X856674-001. Genuine. This attachment converts your Xbox 360 Slim XDK TestKit into a fully working DevKit, unlocking more DEBUG compatibilities. Installation is very easy. Just pull out side cover from your Slim XDK. Pull out side cover from the Sidecar too. Mount the Sidecar and tie two screws. In order to connect it to the PC you need USB-B 2.0 wire and Xbox 360 SDK. Tested on my Xbox 360 Slim XDK and as far as I can see, it fully works. -Hardware Diagnostics passed. -Debug in xbWatson worked. -PC identifies sidecar as "Xbox 360 Development Kit/Test Kit (DVD EMU port)" and says "This device is working properly". -Two glowing green LEDs inside. -Orange DEBUG LED flashes inside too. Condition: Please, take a look at the pictures carefully. Bear in mind that this piece of hardware is not new and is glossy.  There are scratches and bumps on plastic, which is very hard to photograph. But I see no cracks on it. I am not even sure if it was previously used or not. It came sealed in a plastic wrap, but I am not sure if it was original or not. I had to pull it out to photograph the condition. Please, take a look at the pictures carefully. Sold AS IS. Have any questions? Feel free to ask me!