In case of the RME it reports Bulk and Interrupt as the only available modes.
This is the device enumeration, it tells the capabilities of the device, not what is actually used.
Here you go:
Information for device Fireface UC Win (23299755) (VID=0x0424 PID=0x3FC5):
Version of TDD: 1.34 Date: Sep 7 2011 Time: 08:44:13
Connection Information:
------------------------------
Connection status: Device connected
Device actual bus speed: High
Device is hub: No
Device adress: 0x0006
Current configuration value: 0x01
Number of open pipes: 11
Device Descriptor:
------------------------------
Value Valuename
0x12 bLength
0x01 bDescriptorType
0x0200 bcdUSB
0xFF bDeviceClass (Vendor specific)
0x00 bDeviceSubClass
0x00 bDeviceProtocol
0x40 bMaxPacketSize0 (64 Bytes)
0x0424 idVendor
0x3FC5 idProduct
0x0001 bcdDevice
0x01 iManufacturer (RME)
0x02 iProduct (Fireface UC Win (23299755))
0x03 iSerialNumber (BF3340DD85E29A8)
0x01 bNumConfigurations
Hex dump:
0x12 0x01 0x00 0x02 0xFF 0x00 0x00 0x40 0x24 0x04
0xC5 0x3F 0x01 0x00 0x01 0x02 0x03 0x01
Device Qualifier Descriptor:
------------------------------
Value Valuename
0x0A bLength
0x06 bDescriptorType
0x0200 bcdUSB
0xFF bDeviceClass (Vendor specific)
0x00 bDeviceSubClass
0x00 bDeviceProtocol
0x40 bMaxPacketSize0 (64 Bytes)
0x00 bNumConfigurations
0x00 bReserved
Hex dump:
0x0A 0x06 0x00 0x02 0xFF 0x00 0x00 0x40 0x00 0x00
Configuration Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x02 bDescriptorType
0x00FB wTotalLength
0x06 bNumInterfaces
0x01 bConfigurationValue
0x00 iConfiguration
0xC0 bmAttributes (Self-powered Device)
0x32 MaxPower (100 mA)
Hex dump:
0x09 0x02 0xFB 0x00 0x06 0x01 0x00 0xC0 0x32
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x00 bInterfaceNumber
0x00 bAlternateSetting
0x04 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x00 iInterface
Hex dump:
0x09 0x04 0x00 0x00 0x04 0xFF 0x00 0x00 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x01 bEndpointAddress (Out-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0040 wMaxPacketSize (64 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x01 0x03 0x40 0x00 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x82 bEndpointAddress (In-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0040 wMaxPacketSize (64 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x82 0x03 0x40 0x00 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x03 bEndpointAddress (Out-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x03 0x02 0x00 0x02 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x84 bEndpointAddress (In-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x84 0x02 0x00 0x02 0x00
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x00 bInterfaceNumber
0x01 bAlternateSetting
0x04 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x00 iInterface
Hex dump:
0x09 0x04 0x00 0x01 0x04 0xFF 0x00 0x00 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x01 bEndpointAddress (Out-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0240 wMaxPacketSize (576 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x01 0x03 0x40 0x02 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x82 bEndpointAddress (In-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0240 wMaxPacketSize (576 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x82 0x03 0x40 0x02 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x03 bEndpointAddress (Out-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x03 0x02 0x00 0x02 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x84 bEndpointAddress (In-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x84 0x02 0x00 0x02 0x00
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x00 bInterfaceNumber
0x02 bAlternateSetting
0x04 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x00 iInterface
Hex dump:
0x09 0x04 0x00 0x02 0x04 0xFF 0x00 0x00 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x01 bEndpointAddress (Out-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0380 wMaxPacketSize (896 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x01 0x03 0x80 0x03 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x82 bEndpointAddress (In-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0380 wMaxPacketSize (896 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x82 0x03 0x80 0x03 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x03 bEndpointAddress (Out-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x03 0x02 0x00 0x02 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x84 bEndpointAddress (In-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x84 0x02 0x00 0x02 0x00
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x00 bInterfaceNumber
0x03 bAlternateSetting
0x04 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x00 iInterface
Hex dump:
0x09 0x04 0x00 0x03 0x04 0xFF 0x00 0x00 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x01 bEndpointAddress (Out-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0300 wMaxPacketSize (768 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x01 0x03 0x00 0x03 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x82 bEndpointAddress (In-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0300 wMaxPacketSize (768 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x82 0x03 0x00 0x03 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x03 bEndpointAddress (Out-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0300 wMaxPacketSize (768 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x03 0x03 0x00 0x03 0x01
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x84 bEndpointAddress (In-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0300 wMaxPacketSize (768 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x84 0x03 0x00 0x03 0x01
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x01 bInterfaceNumber
0x00 bAlternateSetting
0x01 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x00 iInterface
Hex dump:
0x09 0x04 0x01 0x00 0x01 0xFF 0x00 0x00 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x85 bEndpointAddress (In-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x85 0x02 0x00 0x02 0x00
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x02 bInterfaceNumber
0x00 bAlternateSetting
0x02 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x02 iInterface (Fireface UC Win (23299755))
Hex dump:
0x09 0x04 0x02 0x00 0x02 0xFF 0x00 0x00 0x02
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x86 bEndpointAddress (In-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x86 0x02 0x00 0x02 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x07 bEndpointAddress (Out-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x07 0x02 0x00 0x02 0x01
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x03 bInterfaceNumber
0x00 bAlternateSetting
0x02 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x00 iInterface
Hex dump:
0x09 0x04 0x03 0x00 0x02 0xFF 0x00 0x00 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x88 bEndpointAddress (In-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x88 0x02 0x00 0x02 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x09 bEndpointAddress (Out-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x09 0x02 0x00 0x02 0x00
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x04 bInterfaceNumber
0x00 bAlternateSetting
0x01 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x00 iInterface
Hex dump:
0x09 0x04 0x04 0x00 0x01 0xFF 0x00 0x00 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x8A bEndpointAddress (In-Endpoint)
0x02 bmAttributes
Transfer Type: Bulk-Transfer
Synchronization Type: None
Usage Type: Data
0x0200 wMaxPacketSize (512 Bytes)
0x00 bIntervall
Hex dump:
0x07 0x05 0x8A 0x02 0x00 0x02 0x00
Interface Descriptor:
------------------------------
Value Valuename
0x09 bLength
0x04 bDescriptorType
0x05 bInterfaceNumber
0x00 bAlternateSetting
0x01 bNumEndPoints
0xFF bInterfaceClass (Vendor specific)
0x00 bInterfaceSubClass
0x00 bInterfaceProtocol
0x00 iInterface
Hex dump:
0x09 0x04 0x05 0x00 0x01 0xFF 0x00 0x00 0x00
Endpoint Descriptor:
------------------------------
Value Valuename
0x07 bLength
0x05 bDescriptorType
0x8B bEndpointAddress (In-Endpoint)
0x03 bmAttributes
Transfer Type: Interrupt-Transfer
Synchronization Type: None
Usage Type: Data
0x0004 wMaxPacketSize (4 Bytes)
0x01 bIntervall
Hex dump:
0x07 0x05 0x8B 0x03 0x04 0x00 0x01
Whole Device Descriptor as hex dump:
0x12, 0x01, 0x00, 0x02, 0xFF, 0x00, 0x00, 0x40, 0x24, 0x04, 0xC5, 0x3F, 0x01, 0x00, 0x01, 0x02, 0x03, 0x01
Whole Device Qualifier Descriptor as hex dump:
0x0A, 0x06, 0x00, 0x02, 0xFF, 0x00, 0x00, 0x40, 0x00, 0x00
Whole Configuration Descriptor as hex dump:
0x09, 0x02, 0xFB, 0x00, 0x06, 0x01, 0x00, 0xC0, 0x32, 0x09, 0x04, 0x00, 0x00, 0x04, 0xFF, 0x00, 0x00, 0x00, 0x07, 0x05, 0x01, 0x03, 0x40, 0x00, 0x01, 0x07, 0x05, 0x82, 0x03, 0x40, 0x00, 0x01, 0x07, 0x05, 0x03, 0x02, 0x00, 0x02, 0x00, 0x07, 0x05, 0x84, 0x02, 0x00, 0x02, 0x00, 0x09, 0x04, 0x00, 0x01, 0x04, 0xFF, 0x00, 0x00, 0x00, 0x07, 0x05, 0x01, 0x03, 0x40, 0x02, 0x01, 0x07, 0x05, 0x82, 0x03, 0x40, 0x02, 0x01, 0x07, 0x05, 0x03, 0x02, 0x00, 0x02, 0x00, 0x07, 0x05, 0x84, 0x02, 0x00, 0x02, 0x00, 0x09, 0x04, 0x00, 0x02, 0x04, 0xFF, 0x00, 0x00, 0x00, 0x07, 0x05, 0x01, 0x03, 0x80, 0x03, 0x01, 0x07, 0x05, 0x82, 0x03, 0x80, 0x03, 0x01, 0x07, 0x05, 0x03, 0x02, 0x00, 0x02, 0x00, 0x07, 0x05, 0x84, 0x02, 0x00, 0x02, 0x00, 0x09, 0x04, 0x00, 0x03, 0x04, 0xFF, 0x00, 0x00, 0x00, 0x07, 0x05, 0x01, 0x03, 0x00, 0x03, 0x01, 0x07, 0x05, 0x82, 0x03, 0x00, 0x03, 0x01, 0x07, 0x05, 0x03, 0x03, 0x00, 0x03, 0x01, 0x07, 0x05, 0x84, 0x03, 0x00, 0x03, 0x01, 0x09, 0x04, 0x01, 0x00, 0x01, 0xFF, 0x00, 0x00, 0x00, 0x07, 0x05, 0x85, 0x02, 0x00, 0x02, 0x00, 0x09, 0x04, 0x02, 0x00, 0x02, 0xFF, 0x00, 0x00, 0x02, 0x07, 0x05, 0x86, 0x02, 0x00, 0x02, 0x00, 0x07, 0x05, 0x07, 0x02, 0x00, 0x02, 0x01, 0x09, 0x04, 0x03, 0x00, 0x02, 0xFF, 0x00, 0x00, 0x00, 0x07, 0x05, 0x88, 0x02, 0x00, 0x02, 0x00, 0x07, 0x05, 0x09, 0x02, 0x00, 0x02, 0x00, 0x09, 0x04, 0x04, 0x00, 0x01, 0xFF, 0x00, 0x00, 0x00, 0x07, 0x05, 0x8A, 0x02, 0x00, 0x02, 0x00, 0x09, 0x04, 0x05, 0x00, 0x01, 0xFF, 0x00, 0x00, 0x00, 0x07, 0x05, 0x8B, 0x03, 0x04, 0x00,
0x01
Connectionpath for device:
Intel(R) ICH8 Family USB2 Enhanced Host Controller - 283A RootHub Standard-USB-Hub Fireface UC Win (23299755) (VID=0x0424 PID=0x3FC5)
No, I don't pretend to understand all of this.
But it is shorter than the average objectivist-subjectivist debate