I got a new Kindle recently - Fire HD 7 (2019 generation). I also installed Calibre on a new computer. I was able to connect my old Kindle (from 2012) just fine, so I figured getting the new one hooked up would be a breeze. Not so. I went through all the steps in the "device not detected" thread. Nothing helped there - my computer recognizes the Kindle, the plugin is installed, I'm not using Linux. So I ran the device debug, and here is the output:
Spoiler:
calibre 3.44 embedded-python: True is64bit: False
Windows-10-10.0.18362-SP0 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.18362')
Python 2.7.15+
Windows: ('10', '10.0.18362', 'SP0', u'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: DeDRM (6, 6, 3)
USB devices on system:
(USBDevice(vendor_id=0xa5c product_id=0x5800 bcd=0x101 devid=usb\vid_0a5c&pid_5800&rev_0101&mi_01 devinst=1),
USBDevice(vendor_id=0xa5c product_id=0x5800 bcd=0x101 devid=usb\vid_0a5c&pid_5800&rev_0101&mi_00 devinst=2),
USBDevice(vendor_id=0x8087 product_id=0x24 bcd=0x0 devid=usb\vid_8087&pid_0024&rev_0000 devinst=3),
USBDevice(vendor_id=None product_id=None bcd=None devid=usb\root_hub20&vid8086&pid1c26&rev0004 devinst=4),
USBDevice(vendor_id=0xa5c product_id=0x5800 bcd=0x101 devid=usb\vid_0a5c&pid_5800&rev_0101 devinst=5),
USBDevice(vendor_id=None product_id=None bcd=None devid=usb\root_hub20&vid8086&pid1c2d&rev0004 devinst=6),
USBDevice(vendor_id=0x8087 product_id=0x24 bcd=0x0 devid=usb\vid_8087&pid_0024&rev_0000 devinst=7),
USBDevice(vendor_id=0x413c product_id=0x8187 bcd=0x517 devid=usb\vid_413c&pid_8187&rev_0517 devinst=8),
USBDevice(vendor_id=None product_id=None bcd=None devid=usb\vid_1949&pid_0c31&rev_???? devinst=9))
No disabled plugins
Looking for devices of type: MTP_DEVICE
List of WPD PNP ids:
[u'\\\\?\\usb#vid_1949&pid_0c31#g0w116089176f25r#{6 ac27878-a6fa-4155-ba85-f98f491d4f33}']
MTP device: \\?\usb#vid_1949&pid_0c31#g0w116089176f25r#{6ac278 78-a6fa-4155-ba85-f98f491d4f33}
{'device_version': u'1.0',
'friendly_name': u'',
'has_bulk_properties': True,
'has_storage': True,
'manufacturer_name': u'Amazon',
'model_name': u'Fire',
'protocol': u'MTP: 1.00',
'serial_number': u'G0W116089176F25R',
'storage': [],
'type': 'media player'}
Not a suitable MTP device, ignoring
No suitable MTP devices found
Looking for devices of type: SMART_DEVICE_APP
All IP addresses {'{7545F38D-7DE4-11E9-9950-806E6F6E6963}': [{'broadcast': u'127.0.0.1', 'netmask': u'255.255.255.255', 'addr': u'127.0.0.1'}], '{877A4C3B-5C8F-436C-B963-4E3985AD4B36}': [{'broadcast': u'192.168.1.108', 'netmask': u'255.255.255.255', 'addr': u'192.168.1.108'}]}
No device is connected
Looking for devices...
Devices possibly connected: None

Thanks for any help!