Hi, I´m thinking how to add support for the device: root@ubuntu:~# lsusb Bus 002 Device 002: ID 1c3d:0002 NONIN MEDICAL INC. DMESG: [ 755.041027] usb usb2: usb wakeup-resume [ 755.041036] usb usb2: usb auto-resume [ 755.041039] usb usb2: wakeup_rh [ 755.079163] hub 2-0:1.0: hub_resume [ 755.079179] uhci_hcd 0000:00:1d.0: port 1 portsc 0083,00 [ 755.079184] hub 2-0:1.0: port 1: status 0101 change 0001 [ 755.183109] hub 2-0:1.0: state 7 ports 2 chg 0002 evt 0000 [ 755.183124] hub 2-0:1.0: port 1, status 0101, change 0000, 12 Mb/s [ 755.294745] usb 2-1: new full speed USB device using uhci_hcd and address 4 [ 755.429687] usb 2-1: skipped 2 descriptors after interface [ 755.429693] usb 2-1: skipped 1 descriptor after endpoint [ 755.429696] usb 2-1: skipped 1 descriptor after endpoint [ 755.431931] usb 2-1: default language 0x0409 [ 755.439100] usb 2-1: udev 4, busnum 2, minor = 131 [ 755.439103] usb 2-1: New USB device found, idVendor=1c3d, idProduct=0002 [ 755.439105] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 755.439107] usb 2-1: Product: Nonin Pulse Oximeter [ 755.439108] usb 2-1: Manufacturer: Nonin Medical Inc. [ 755.439110] usb 2-1: SerialNumber: 00000158 [ 755.439217] usb 2-1: usb_probe_device [ 755.439220] usb 2-1: configuration #1 chosen from 1 choice [ 755.497893] usb 2-1: adding 2-1:1.0 (config #1, interface 0) This device is a OxyOximeter blood oxygen monitor from Nonin that implements the personal healthcare standard (ISO/IEEE 11073-10101, Health Informatices and ISO/IEEE 11073-20601 Optimized Exchange Protocol) to exchange the information. The specification for usb is at: http://www.usb.org/developers/devclass_docs => Personal Healthcare => Personal Healthcare Rev. 1.0, Errata for USB Personal Health Care Device Class and Personal Healthcare Adopters Agreement. For this device usb only is used to bypass the information from the device to the application manager (at user space). My question is about how I must adding support for it. I must implement a kernel device driver or at user space with libusb? Thanks in advance. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html