have you read the tutorial properly
cant say for sure that it does work on the slim
but i cant see why it shouldnt as it just works like a wired controller
can you be more specfic on what doesnt work i.e mouse keyboard.
i know that the razer copperhead doesnt work with this but the razer imperator does work,
yes it has to be a official microsoft controller like it says in the tutorials that you were supposed to have read
2.1 H ow to connect the XFRAG 360™ Connect an originalXBOX 360®( is that big enough for you to read)Wired controller to USB Port 1 or2, then connect the
keyboard and mouse to their relative ports. read the tutotial again properly thats what there there for you need a controller like the one in the pic a official microsoft one not some copied peice of garbage