Now the product:
To get the USB 3.0 ports on the motherboard to the front panel, I have the existing card reader replaced by this.
The sturdy metal housing can be installed well, with drive cages with reasonable slots is a complete flush with the front panel no problem.
What bothers me a bit, and the withdrawal of a star leads is that the card slots are a bit hakelig, ie cut-outs in the front and slots on the board do not match 100%, thus you always have to push a little and stutter during card insertion. The SD card used by me by the write-protect switch is always adjusted, which does not have to be real.
Is ugly, that one of the USB 3.0 ports is twisted, ie a is inserted "face-up", the other "face-down". This can be annoying when something under the table Tower already.
The connection to the motherboard is incidentally now foolproof. The blue USB 3.0 jack anyway has a nose that is displayed either on the motherboard or fits into the connector in only one direction. The USB 2.0 cable is now a double-socket (2x4 pins, one of which is closed) equipped to be fitted in the typical 7-pin mainboard connector in only one direction. The disadvantage is that this two available USB 2.0 ports are assigned for the card reader, but only one is used.
After purchase and installation I now got the crisis, as I later read a few other reviews and was told there of low transmission rates. To reassure myself, I have a USB 3.0 Stick (Transcend JetFlash), and a USB 3.0 HD with CrystalDiskMark even remeasured times. The speeds achieved are the direct connection to the motherboard is virtually identical to the measured values to the USB 3.0 ports of the card reader (actually they are reproduced on the card reader even 1% to 2% higher than directly on the motherboard), so no need to uncertainty.
For me, so the desire for fast USB 3.0 ports met in scope and as long as I my old Nikon D50 have yet that can not use SDHC anyway, I'm 2.0 card reader also well served with a USB.
=== Addendum 06.28.2014: ============================
Unfortunately, today the unit returns to be defective. Already during the second use as a card reader, I noticed that the SD card has not been reliably detected. So constant and logout of the USB device / card reader. The activity LED now also burned permanently, even in standby. Above all, the computer no longer went for the past two weeks alone in standby! This is especially annoying because a backup starts at 1:00 clock on a Windows Home Server every night. After that the system no longer works but to stand even the monitors (2x24 ") stay on. This means hours of immense power consumption.
Since my earlier times a defective USB hub goofed standby, I have only once been disabled for USB mouse, USB keyboard and NIC waking from sleep. No improvement. Then also deducted the external USB hub. No improvement. Only when I 2.0 plug the card reader have withdrawn from the motherboard's USB, the computer was as in the control panel set his peace in standby.
The card reader is thus not only processes unclean (see above) but also electrically defective.