I was able to make NUT and my Powercom SPIDER UPS (USB port) work under the Raspberry Pi Desktop (Debian). Everything works in VMware Workstation 15 Player. But my Raspberry Pi 3b + (with raspbian) doesn’t work with the same UPS, and with same NUT configuration. Raspberry sees the UPS, but the driver does not cling. Here is the response of Raspberry 3b + to some commands. pi at raspberrypi:~ $ lsusb Bus 001 Device 004: ID 0d9f:0004 Powercom Co., Ltd Bus 001 Device 005: ID 0424:7800 Standard Microsystems Corp. Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub pi at raspberrypi:~ $ lsusb -v Bus 001 Device 004: ID 0d9f:0004 Powercom Co., Ltd Couldn't open device, some information will be missing Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0d9f Powercom Co., Ltd idProduct 0x0004 bcdDevice 0.02 iManufacturer 3 iProduct 1 iSerial 2 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 34 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 No Subclass bInterfaceProtocol 0 None iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.00 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 996 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 100 pi at raspberrypi:~ $ sudo upsdrvctl start Network UPS Tools - UPS driver controller 2.7.4 Network UPS Tools - Generic HID driver 0.41 (2.7.4) USB communication driver 0.33 No matching HID UPS found Driver failed to start (exit status=1) And this is in the "ups.conf" file maxretry = 3 [SPIDER] driver = usbhid-ups port = auto desc = "Powercom SPIDER" -- С уважением Зайчиков В А -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://alioth-lists.debian.net/pipermail/nut-upsuser/attachments/20190503/ad2e38ad/attachment.html>