Walking more or less Linux (Kubuntu 14.10)

Well almost ...
I had foolishly forgotten to plug in the power connector Molex and only the card reader then functional.
My mistake repaired, my hard drive 2.5 "USB 3 showed 55 MB / s read against 23 MB / s for USB 2, which is not bad on a machine whose internal drives have a barely higher rate (60 MB / s).

Màj the 02/26/2015: After two months of use, I realize that it is not uncommon for the PC suffers a kind of reset followed by blocking the insertion of a USB key; you must then turn it off and on.
I also note that it seems impossible (at least on linux) to write directly to a micro SD; the support is considered write-protected. It is necessary to use an adapter connected to the SD port.