Attractive housing with teething

I had purchased three external hard drive enclosure for backup purposes.
The Sharkoon Rapid-Case looks chic, made of aluminum and the build quality is, in my view perfectly fine.
The installation of SATA HDDs is quick and easy (mounting screws, screwdriver, rubber absorber and a blue USB3 connection cable
are included).
The transfer speed is expected to be sufficiently higher than conventional USB2 disks.

Unfortunately, I can the case anyway for key data not fully recommend.
That's not even on the company Sharkoon, but the fact that at USB3 devices still present some inconsistencies.
Especially in the interplay between USB3 host controller on the mainboard (NEC uPD720200 MSI P55A-GD65 on a) and USB3-SATA Bridge in Sharkoon Housing (JMicron JMS539).

Upon delivery, all the drives were not usable for USB3.0 operation (USB2 was not a problem!). The controller in the Sharkoon case is briefly detected by Windows 7 and immediately lost it again, with the result that the USB3 device permanently on and logs off again ("xHCI Driver Unload Problem"). In addition, instabilities occur during data transfer, so that the connection to the computer reproducible tearing - "Ding-Dong-Ding-Dong".

Remedy took the following steps in order to make the case at all usable:

1) Sharkoon housing at one USB2.0 (!) Port Connecting and turning

2) Firmware update of JMicron JMS539 in Sharkoon housing on V.255.0.3.0.2 (FwUpdateTool_v1_16_00_T2 on the manufacturing side of Sharkoon)

3) Firmware update of the NEC USB controller uPD72020 on the mainboard on V.3025 (eg NEC_usb3_F302508FWUP1 station-drivers.com)

4) updating the driver Renesas Electronics (NEC) USB 3.0 Host Controller to v.2.0.4.0 (eg motherboard manufacturer or station-drivers.com)

Whether this all teething problems have been resolved, remains to be seen (as of 09/2010).
One of the three drives I have but can not move to a stable operation, I will send it back as a defect to the dealer.
Here everyone must decide for himself whether he wants to entrust important data of an immature technology or not.
The speed advantage over USB 2.0 is clearly there, but bought with a price under certain circumstances.