"sudo lshw >> lshw.txt" hangs forever at "USB"

I got a "new" machine and installed Xubuntu 15.04 on it.

Trying to get the hardware list out of it, i did this:

open up a Terminal
~$ sudo lshw >> lshw.text
USB

There it hangs forever...

Maybe the installed USB-Card (Transcend TS-PDU3) on PCI slot without power is the problem?
I got no more electrical connection...

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: lshw 02.17-1.1ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
Uname: Linux 3.19.0-18-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
Date: Sat May 30 17:01:23 2015
InstallationDate: Installed on 2015-05-28 (1 days ago)
InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
SourcePackage: lshw
UpgradeStatus: No upgrade log present (probably fresh install)