idVendor: 0x072F iManufacturer: ACS idProduct: 0x2259 iProduct: ACR1252IMP Reader bcdDevice: 1.00 (firmware release?) bLength: 9 bDescriptorType: 4 bInterfaceNumber: 0 bAlternateSetting: 0 bNumEndpoints: 3 bulk-IN, bulk-OUT and Interrupt-IN bInterfaceClass: 0x0B [Chip Card Interface Device Class (CCID)] bInterfaceSubClass: 0 bInterfaceProtocol: 0 bulk transfer, optional interrupt-IN (CCID) iInterface: ACR1252IMP Reader PICC CCID Class Descriptor bLength: 0x36 bDescriptorType: 0x21 bcdCCID: 1.00 bMaxSlotIndex: 0x00 bVoltageSupport: 0x07 5.0V 3.0V 1.8V dwProtocols: 0x0000 0x0002 T=1 dwDefaultClock: 4.000 MHz dwMaximumClock: 4.000 MHz bNumClockSupported: 0 (will use whatever is returned) IFD does not support GET CLOCK FREQUENCIES request: LIBUSB_ERROR_PIPE dwDataRate: 10752 bps dwMaxDataRate: 250000 bps bNumDataRatesSupported: 0 (will use whatever is returned) IFD does not support GET_DATA_RATES request: LIBUSB_ERROR_PIPE dwMaxIFSD: 254 dwSynchProtocols: 0x00000000 dwMechanical: 0x00000000 No special characteristics dwFeatures: 0x000404BA ....02 Automatic parameter configuration based on ATR data ....08 Automatic ICC voltage selection ....10 Automatic ICC clock frequency change according to parameters ....20 Automatic baud rate change according to frequency and Fi, Di params ....80 Automatic PPS made by the CCID ..04.. Automatic IFSD exchange as first exchange (T=1) 04.... Short and Extended APDU level exchange dwMaxCCIDMessageLength: 522 bytes bClassGetResponse: 0x00 bClassEnvelope: 0x00 wLcdLayout: 0x0000 bPINSupport: 0x00 bMaxCCIDBusySlots: 1 idVendor: 0x072F iManufacturer: ACS idProduct: 0x2259 iProduct: ACR1252IMP Reader bcdDevice: 1.00 (firmware release?) bLength: 9 bDescriptorType: 4 bInterfaceNumber: 1 bAlternateSetting: 0 bNumEndpoints: 3 bulk-IN, bulk-OUT and Interrupt-IN bInterfaceClass: 0x0B [Chip Card Interface Device Class (CCID)] bInterfaceSubClass: 0 bInterfaceProtocol: 0 bulk transfer, optional interrupt-IN (CCID) iInterface: ACR1252IMP Reader SAM CCID Class Descriptor bLength: 0x36 bDescriptorType: 0x21 bcdCCID: 1.10 bMaxSlotIndex: 0x00 bVoltageSupport: 0x01 5.0V dwProtocols: 0x0000 0x0003 T=0 T=1 dwDefaultClock: 3.420 MHz dwMaximumClock: 3.420 MHz bNumClockSupported: 0 (will use whatever is returned) IFD does not support GET CLOCK FREQUENCIES request: LIBUSB_ERROR_PIPE dwDataRate: 9193 bps dwMaxDataRate: 213750 bps bNumDataRatesSupported: 0 (will use whatever is returned) IFD does not support GET_DATA_RATES request: LIBUSB_ERROR_PIPE dwMaxIFSD: 254 dwSynchProtocols: 0x00000000 dwMechanical: 0x00000000 No special characteristics dwFeatures: 0x000204BA ....02 Automatic parameter configuration based on ATR data ....08 Automatic ICC voltage selection ....10 Automatic ICC clock frequency change according to parameters ....20 Automatic baud rate change according to frequency and Fi, Di params ....80 Automatic PPS made by the CCID ..04.. Automatic IFSD exchange as first exchange (T=1) 02.... Short APDU level exchange dwMaxCCIDMessageLength: 288 bytes bClassGetResponse: 0x00 bClassEnvelope: 0x00 wLcdLayout: 0x0000 bPINSupport: 0x00 bMaxCCIDBusySlots: 1