In the "About" section of the device's settings it just says "Supernote A5 X - Display size: 10.3 inch".
The device received a firmware update few days ago, the current version is "Chauvet 2.1.6".
Please find attached the calibre-debug -d output.
I'll paste it here below, just in case.
Thanks
Alessandro


calibre 5.34  embedded-python: True is64bit: False
Windows-10-10.0.19041 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: it
USB devices on system:
(USBDevice(vendor_id=0x1a2c product_id=0x2124 bcd=0x110 devid=usb\vid_1a2c&pid_2124&rev_0110 devinst=2),
 USBDevice(vendor_id=0xbda product_id=0x57de bcd=0x14 devid=usb\vid_0bda&pid_57de&rev_0014&mi_00 devinst=3),
 USBDevice(vendor_id=0x1a2c product_id=0x2124 bcd=0x110 devid=usb\vid_1a2c&pid_2124&rev_0110&mi_01 devinst=4),
 USBDevice(vendor_id=0x2207 product_id=0x11 bcd=0x310 devid=usb\vid_2207&pid_0011&rev_0310&mi_01 devinst=5),
 USBDevice(vendor_id=0xbda product_id=0x57de bcd=0x14 devid=usb\vid_0bda&pid_57de&rev_0014 devinst=6),
 USBDevice(vendor_id=0x2207 product_id=0x11 bcd=0x310 devid=usb\vid_2207&pid_0011&rev_0310 devinst=7),
 USBDevice(vendor_id=0xbda product_id=0x5411 bcd=0x104 devid=usb\vid_0bda&pid_5411&rev_0104 devinst=8),
 USBDevice(vendor_id=0x93a product_id=0x2510 bcd=0x100 devid=usb\vid_093a&pid_2510&rev_0100 devinst=9),
 USBDevice(vendor_id=0x4ca product_id=0x3018 bcd=0x1 devid=usb\vid_04ca&pid_3018&rev_0001 devinst=10),
 USBDevice(vendor_id=0xbda product_id=0x129 bcd=0x3960 devid=usb\vid_0bda&pid_0129&rev_3960 devinst=11),
 USBDevice(vendor_id=0x1a2c product_id=0x2124 bcd=0x110 devid=usb\vid_1a2c&pid_2124&rev_0110&mi_00 devinst=12),
 USBDevice(vendor_id=0x2207 product_id=0x11 bcd=0x310 devid=usb\vid_2207&pid_0011&rev_0310&mi_00 devinst=1),
 USBDevice(vendor_id=None product_id=None bcd=None devid=usb\root_hub30&vid8086&pid9d2f&rev0021 devinst=13))

No disabled plugins
Looking for devices of type: MTP_DEVICE
List of WPD PNP ids:
['\\\\?\\usb#vid_2207&pid_0011&mi_00#7&377db9a1&0&0000#{6ac27878-a6fa-4155-ba85-f98f491d4f33}']
MTP device: \\?\usb#vid_2207&pid_0011&mi_00#7&377db9a1&0&0000#{6ac27878-a6fa-4155-ba85-f98f491d4f33}
{'device_version': '1.0',
 'friendly_name': '',
 'has_bulk_properties': True,
 'has_storage': True,
 'manufacturer_name': 'rockchip',
 'model_name': 'Supernote A5 X',
 'protocol': 'MTP: 1.00',
 'serial_number': '7F35A2427F97296BB8E5967C81D84C63',
 'storage': [{'capacity': 23743934464,
              'capacity_objects': 0,
              'description': 'Supernote',
              'filesystem': 'Generico gerarchico',
              'free_objects': 1073741824,
              'free_space': 21975793664,
              'id': 's10001',
              'name': 'Supernote',
              'rw': True,
              'type': 'fixed_ram'}],
 'type': 'unknown'}

Trying to open: \\?\usb#vid_2207&pid_0011&mi_00#7&377db9a1&0&0000#{6ac27878-a6fa-4155-ba85-f98f491d4f33}
Opened Supernote A5 X successfully
Device info:
{'device_version': '1.0',
 'friendly_name': '',
 'has_bulk_properties': True,
 'has_storage': True,
 'manufacturer_name': 'rockchip',
 'model_name': 'Supernote A5 X',
 'protocol': 'MTP: 1.00',
 'serial_number': '7F35A2427F97296BB8E5967C81D84C63',
 'storage': [{'capacity': 23743934464,
              'capacity_objects': 0,
              'description': 'Supernote',
              'filesystem': 'Generico gerarchico',
              'free_objects': 1073741824,
              'free_space': 21975793664,
              'id': 's10001',
              'name': 'Supernote',
              'rw': True,
              'type': 'fixed_ram'}],
 'type': 'unknown'}
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