Hello
Here's the Sony PRS-350 debug information for you, Kovid :
Books are stored under "database/media/books".
Here's the debug information with the device connected :
Version: 0.7.18
USB devices on system:
[u'usb\\root_hub20&vid8086&pid3b34&rev0006',
u'usb\\root_hub20&vid8086&pid3b3c&rev0006',
u'usb\\vid_045e&pid_00d1&rev_0120',
u'usb\\vid_054c&pid_031e&rev_031:',
u'usb\\vid_0a5c&pid_219b&rev_0343',
u'usb\\vid_0ac8&pid_c342&rev_0005',
u'usb\\vid_0ac8&pid_c342&rev_0005&mi_00',
u'usb\\vid_8087&pid_0020&rev_0000',
u'usb\\vid_8087&pid_0020&rev_0000']
Drives detected:
(0) F:\ ~ \\?\STORAGE#VOLUME#_??_USBSTOR#DISK&VEN_SONY&PROD_ PRS-350&REV_1.00#08004610012D888F&0#{53F56307-B6BF-11D0-94F2-00A0C91EFB8B}#{53F5630D-B6BF-11D0-94F2-00A0C91EFB8B}
(1) G:\ ~ \\?\STORAGE#VOLUME#_??_USBSTOR#DISK&VEN_SONY&PROD_ PRS-350_LAUNCHER&REV_1.00#08004610012D888F&1#{53F56307-B6BF-11D0-94F2-00A0C91EFB8B}#{53F5630D-B6BF-11D0-94F2-00A0C91EFB8B}
Looking for ALEX
Looking for ANDROID
Looking for AVANT
Looking for AZBOOKA
Looking for BLACKBERRY
Looking for BOOQ
Looking for BOOX
Looking for COOL_ER
Looking for CYBOOK
Looking for DBOOK
Looking for E52
Looking for E71X
Looking for EB511
Looking for EB600
Looking for EBK52
Looking for ECLICTO
Looking for EDGE
Looking for ELONEX
Looking for ESLICK
Looking for FOLDER_DEVICE_FOR_CONFIG
Looking for GEMEI
Looking for GER2
Looking for HANLINV3
Looking for HANLINV5
Looking for ILIAD
Looking for INVESBOOK
Looking for IPAPYRUS
Looking for IREXDR1000
Looking for IREXDR800
Looking for IRIVER_STORY
Looking for ITALICA
Looking for ITUNES
Looking for JETBOOK
Looking for KINDLE
Looking for KINDLE2
Looking for KINDLE_DX
Looking for KOBO
Looking for KOGAN
Looking for MENTOR
Looking for MIBUK
Looking for N516
Looking for N770
Looking for N810
Looking for NEWSMY
Looking for NOOK
Looking for NUUT2
Looking for PALMPRE
Looking for PDNOVEL
Looking for POCKETBOOK301
Looking for POCKETBOOK360
Looking for PRS505
u'usb\\vid_054c&pid_031e&rev_031:'
No match found in: \\?\STORAGE#VOLUME#_??_USBSTOR#DISK&VEN_SONY&PROD_ PRS-350_LAUNCHER&REV_1.00#08004610012D888F&1#{53F56307-B6BF-11D0-94F2-00A0C91EFB8B}#{53F5630D-B6BF-11D0-94F2-00A0C91EFB8B}
No match found in: \\?\STORAGE#VOLUME#_??_USBSTOR#DISK&VEN_SONY&PROD_ PRS-350&REV_1.00#08004610012D888F&0#{53F56307-B6BF-11D0-94F2-00A0C91EFB8B}#{53F5630D-B6BF-11D0-94F2-00A0C91EFB8B}
Looking for README
Looking for S60
Looking for SHINEBOOK
Looking for SNE
Looking for SPECTRA
Looking for SWEEX
Looking for TECLAST_K3
Looking for THEBOOK
Devices possibly connected: None
And now without :
Version: 0.7.18
USB devices on system:
[u'usb\\root_hub20&vid8086&pid3b34&rev0006',
u'usb\\root_hub20&vid8086&pid3b3c&rev0006',
u'usb\\vid_045e&pid_00d1&rev_0120',
u'usb\\vid_0a5c&pid_219b&rev_0343',
u'usb\\vid_0ac8&pid_c342&rev_0005',
u'usb\\vid_0ac8&pid_c342&rev_0005&mi_00',
u'usb\\vid_8087&pid_0020&rev_0000',
u'usb\\vid_8087&pid_0020&rev_0000']
Traceback (most recent call last):
File "site-packages\calibre\devices\scanner.py", line 69, in __call__
DriveError: No removable drives found
Drives detected:
Looking for ALEX
Looking for ANDROID
Looking for AVANT
Looking for AZBOOKA
Looking for BLACKBERRY
Looking for BOOQ
Looking for BOOX
Looking for COOL_ER
Looking for CYBOOK
Looking for DBOOK
Looking for E52
Looking for E71X
Looking for EB511
Looking for EB600
Looking for EBK52
Looking for ECLICTO
Looking for EDGE
Looking for ELONEX
Looking for ESLICK
Looking for FOLDER_DEVICE_FOR_CONFIG
Looking for GEMEI
Looking for GER2
Looking for HANLINV3
Looking for HANLINV5
Looking for ILIAD
Looking for INVESBOOK
Looking for IPAPYRUS
Looking for IREXDR1000
Looking for IREXDR800
Looking for IRIVER_STORY
Looking for ITALICA
Looking for ITUNES
Looking for JETBOOK
Looking for KINDLE
Looking for KINDLE2
Looking for KINDLE_DX
Looking for KOBO
Looking for KOGAN
Looking for MENTOR
Looking for MIBUK
Looking for N516
Looking for N770
Looking for N810
Looking for NEWSMY
Looking for NOOK
Looking for NUUT2
Looking for PALMPRE
Looking for PDNOVEL
Looking for POCKETBOOK301
Looking for POCKETBOOK360
Looking for PRS505
Looking for README
Looking for S60
Looking for SHINEBOOK
Looking for SNE
Looking for SPECTRA
Looking for SWEEX
Looking for TECLAST_K3
Looking for THEBOOK
Devices possibly connected: None
Hope this will help! I'm using Windows 7 Home Premium 64 bit if it makes any difference