add to drivedb: Unknown USB bridge [0x152d:0x578e (0x1402)]
An external hard drive with a USB 3 interface wasn't directly recognised by Debian testing's smartmontools. The device was sold as "Intenso Memory Center" external hard drive (mainly sold in the EU). This brand seemingly uses all kinds of makes and models of controllers and disks.
I've checked trunk's drivedb.h, and I didn't see the USB id defined there. Also, its USB id wasn't yet in the online usb.ids database.
The device seems to work just fine with device type 'sat'. I've also tried the various 'usbjmicron' options, but these threw errors.
Enclosed is the output of two smartctl runs: one without a device type, and one with device type 'sat'. Hope this helps! If I can help by providing any further information, please let me know - I'd be glad to help.