# FX30 USB interface problem **URL:** \ **Category:** FX30\ **Created:** [December 18, 2017, 2:13am UTC](https://forum.sierrawireless.com/t/fx30-usb-interface-problem/9691 "2017-12-18T02:13:27Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![gustavocarlos](https://avatars.discourse-cdn.com/v4/letter/g/bcef8e/32.png) [@gustavocarlos](https://forum.sierrawireless.com/u/gustavocarlos)\ **Post date:** [December 18, 2017, 2:13am UTC](https://forum.sierrawireless.com/t/fx30-usb-interface-problem/9691/1 "2017-12-18T02:13:27Z")
Hello all, I am following the instructions to get start with FX30 as an IoT Gateway and I am facing a problem to connect to the Linux kernel over the USB. When I plug the board to my Ubuntu host computer, it generates a connection and I get an IP address, but in few seconds this conection is lost, sometimes I have time to connect using: ```auto ssh root@192.168.2.2 ``` Anybody has faced this problem too. Thank you so much Gustavo Carlos ---
**Author:** ![cchenry](https://avatars.discourse-cdn.com/v4/letter/c/a183cd/32.png) [@cchenry](https://forum.sierrawireless.com/u/cchenry)\ **Post date:** [December 18, 2017, 5:42pm UTC](https://forum.sierrawireless.com/t/fx30-usb-interface-problem/9691/2 "2017-12-18T17:42:26Z")
Hi Gustavo, Do you know what version is running on the device? Is this a brand new device or have you previously loaded other versions or types (ie WP85 stock) of software? The USB network adapter should be stable. Perhaps try another USB cable? BR, Chris ---
**Author:** ![gustavocarlos](https://avatars.discourse-cdn.com/v4/letter/g/bcef8e/32.png) [@gustavocarlos](https://forum.sierrawireless.com/u/gustavocarlos)\ **Post date:** [December 20, 2017, 2:54am UTC](https://forum.sierrawireless.com/t/fx30-usb-interface-problem/9691/3 "2017-12-20T02:54:47Z")
Hi Chris, Thank you for the answer, but the problem was in the host side in the modem manager. So removing it it worked. ```auto sudo apt-get remove modemmanager ``` I am using ubuntu 16.04 Thanks Gustavo