Here is the debug log. The device ID for nook is the one that shows up in that output - 2080/000e/4.09. calibre 6.5 embedded-python: True Windows-10-10.0.19041-SP0 Windows ('64bit', 'WindowsPE') ('Windows', '10', '10.0.19041') Python 3.10.1 Windows: ('10', '10.0.19041', 'SP0', 'Multiprocessor Free') Interface language: None USB devices on system: (USBDevice(vendor_id=0xb05 product_id=0x18f3 bcd=0x100 devid=usb\vid_0b05&pid_18f3&rev_0100 devinst=2), USBDevice(vendor_id=0x46d product_id=0xc08b bcd=0x2703 devid=usb\vid_046d&pid_c08b&rev_2703&mi_00 devinst=3), USBDevice(vendor_id=0xd8c product_id=0x12 bcd=0x100 devid=usb\vid_0d8c&pid_0012&rev_0100&mi_00 devinst=4), USBDevice(vendor_id=None product_id=None bcd=None devid=usb\root_hub30&vid1022&pid149c&rev0000 devinst=5), USBDevice(vendor_id=None product_id=None bcd=None devid=usb\root_hub30&vid1022&pid149c&rev0000 devinst=6), USBDevice(vendor_id=0x1b1c product_id=0xc0a bcd=0x100 devid=usb\vid_1b1c&pid_0c0a&rev_0100 devinst=7), USBDevice(vendor_id=0x46d product_id=0xc52b bcd=0x1211 devid=usb\vid_046d&pid_c52b&rev_1211&mi_00 devinst=8), USBDevice(vendor_id=0x1b1c product_id=0x1b09 bcd=0x109 devid=usb\vid_1b1c&pid_1b09&rev_0109 devinst=9), USBDevice(vendor_id=0x46d product_id=0xc08b bcd=0x2703 devid=usb\vid_046d&pid_c08b&rev_2703&mi_01 devinst=10), USBDevice(vendor_id=0xb05 product_id=0x18f3 bcd=0x100 devid=usb\vid_0b05&pid_18f3&rev_0100&mi_00 devinst=11), USBDevice(vendor_id=0xd8c product_id=0x12 bcd=0x100 devid=usb\vid_0d8c&pid_0012&rev_0100 devinst=12), USBDevice(vendor_id=0x46d product_id=0xc52b bcd=0x1211 devid=usb\vid_046d&pid_c52b&rev_1211&mi_01 devinst=13), USBDevice(vendor_id=0x46d product_id=0xc08b bcd=0x2703 devid=usb\vid_046d&pid_c08b&rev_2703 devinst=14), USBDevice(vendor_id=0x46d product_id=0xc52b bcd=0x1211 devid=usb\vid_046d&pid_c52b&rev_1211&mi_02 devinst=15), USBDevice(vendor_id=None product_id=None bcd=None devid=usb\root_hub30&vid1022&pid149c&rev0000 devinst=16), USBDevice(vendor_id=0x46d product_id=0xc52b bcd=0x1211 devid=usb\vid_046d&pid_c52b&rev_1211 devinst=17), USBDevice(vendor_id=0xb05 product_id=0x18f3 bcd=0x100 devid=usb\vid_0b05&pid_18f3&rev_0100&mi_02 devinst=18), USBDevice(vendor_id=0xd8c product_id=0x12 bcd=0x100 devid=usb\vid_0d8c&pid_0012&rev_0100&mi_03 devinst=19), USBDevice(vendor_id=0x1b1c product_id=0x1b09 bcd=0x109 devid=usb\vid_1b1c&pid_1b09&rev_0109&mi_02 devinst=20), USBDevice(vendor_id=0x1b1c product_id=0x1b09 bcd=0x109 devid=usb\vid_1b1c&pid_1b09&rev_0109&mi_01 devinst=21), USBDevice(vendor_id=0x1b1c product_id=0x1b09 bcd=0x109 devid=usb\vid_1b1c&pid_1b09&rev_0109&mi_00 devinst=22), USBDevice(vendor_id=0x2080 product_id=0xe bcd=0x409 devid=usb\vid_2080&pid_000e&rev_0409 devinst=23)) No disabled plugins Looking for devices of type: MTP_DEVICE List of WPD PNP ids: ['\\\\?\\swd#wpdbusenum#_??_usbstor#disk&ven_linux&prod_file-stor_gadget&rev_0409#5021910035445201&0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}#{6ac27878-a6fa-4155-ba85-f98f491d4f33}'] No suitable MTP devices found Looking for devices of type: SMART_DEVICE_APP No IP addresses found No device is connected Looking for devices... USBDevice(vendor_id=0x2080 product_id=0xe bcd=0x409 devid=usb\vid_2080&pid_000e&rev_0409 devinst=23) Detected possible device NOOK_COLOR Devices possibly connected: Nook Color Device Interface, Trying to open Nook Color Device Interface ... Storage number map: {(7, 0): [(2, 'F')], (7, 1): [(2, 'M')], (7, 2): [(1, 'G')], (7, 3): [(2, 'C'), (3, 'D')], (7, 4): [(1, 'E')]} Storage number for USBSTOR\DISK&VEN_LINUX&PROD_FILE-STOR_GADGET&REV_0409\5021910035445201&0: StorageDeviceNumber(type=7, number=4, partition_number=0) Drive letters for USBDevice(vendor_id=0x2080 product_id=0xe bcd=0x409 devid=usb\vid_2080&pid_000e&rev_0409 devinst=23) {'drive_letters': ['E'], 'pnp_id_map': {'E': '\\\\?\\usbstor#disk&ven_linux&prod_file-stor_gadget&rev_0409#5021910035445201&0#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}'}, 'readonly_drives': set(), 'sort_map': {'E': (4, 1)}} Opened NOOK with product id: 14 OK Main memory: 'E:\\' Total space: (4821549056, 0, 0)