# VCI 400 doesn't work **URL:** \ **Category:** DJ TechTools' VCI-400SE Product Support\ **Created:** [January 11, 2012, 6:33pm UTC](https://forum.djtechtools.com/t/vci-400-doesnt-work/35950 "2012-01-11T18:33:34Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mattjay](https://avatars.discourse-cdn.com/v4/letter/m/a87d85/32.png) [@mattjay](https://forum.djtechtools.com/u/mattjay)\ **Post date:** [January 11, 2012, 6:33pm UTC](https://forum.djtechtools.com/t/vci-400-doesnt-work/35950/1 "2012-01-11T18:33:34Z")
**VCI 400 doesn’t work** Hey guys! I just received my VCI 400 and I’m already pissed off with it 😉 I’m using Mac Lion so i just had to plug in the device and it has been found by my OS with no problems. But when I started Traktor it just didn’t want to communicate with my device. After I installed the latest firmware it finally started working. One reboot later and it stopped working with traktor. Do you have any ideas what to do? ---
**Author:** ![SoRNDM](https://avatars.discourse-cdn.com/v4/letter/s/d07c76/32.png) [@SoRNDM](https://forum.djtechtools.com/u/SoRNDM)\ **Post date:** [January 11, 2012, 7:21pm UTC](https://forum.djtechtools.com/t/vci-400-doesnt-work/35950/2 "2012-01-11T19:21:40Z")
Have you imported the tsi file and changed the in- and outgoing port to the vci 400? ---
**Author:** ![DJWORX](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/djworx/32/48_2.png) [@DJWORX](https://forum.djtechtools.com/u/DJWORX)\ **Post date:** [January 11, 2012, 7:36pm UTC](https://forum.djtechtools.com/t/vci-400-doesnt-work/35950/3 "2012-01-11T19:36:05Z")
Sometimes, opening the audio midi application in utilities can help kickstart things too. ---
**Author:** ![mattjay](https://avatars.discourse-cdn.com/v4/letter/m/a87d85/32.png) [@mattjay](https://forum.djtechtools.com/u/mattjay)\ **Post date:** [January 12, 2012, 11:50am UTC](https://forum.djtechtools.com/t/vci-400-doesnt-work/35950/4 "2012-01-12T11:50:06Z")
thanks! That does the trick 🙂