USB getConfigurationDescription

Let's continue by receiving the descriptor for configuration 1 (the only configuration supplied by the device)
4002 0105 0900 2002 0224 0604 0120 0130 0103 2409 0001 1001 4002 0324 0903 1001 0224 0600 2501 0001 2407 0000 0301 0200 0004 0932 8000 0101 0053 0209 

Byte	Field	Value	Meaning
0	bLength	0x09	The Configuration description consists of 9 bytes
1	bDescriptorType	0x02	Descriptor type CONFIGURATION
2-3	wTotalLength	0x0053	Total length of configuration, including descriptors for configuration, interfaces and endpoints
4	bNumInterfaces	0x01	Configuration has 1 interface
5	bConfigurationValue	0x01	The value of this configuration is 1
6	iConfiguration	0x00	String index 0 describes this configuration
7	bmAttributes	0x80	Device powered by bus and has no remote wake up feature
8	bMaxPower	0x32	Max power consumption is 50*2mA = 100mA

The rest of the supplied data should be descriptors for interfaces and endpoints:

Interface descriptor

This descriptor starts with byte 9 in the data above. The first value is the length of the descriptor, which we can see is 0x09. That means that the data to interpret is:

0000 0301 0200 0004 09

Byte	Field	Value	Meaning
0	bLength	0x09	The Interface description consists of 9 bytes
1	bDescriptorType	0x04	Descriptor type INTERFACE
2	bInterfaceNumber	0x00	Interface is number 0
3	bAlternateSetting	0x00	Value to select this alternate setting
4	bNumEndpoints	0x02	This interface uses two endpoints
5	bInterfaceClass	0x01	Interface class is 1
6	bInterfaceSubClass	0x03	Interface sub class is 3
7	bInterfaceProtocol	0x00	Device does not use class-specific protocol
8	iInterface	0x00	String index for this descriptor is 0

Now, the next entry puzzles me, descriptor is of type 0x24. I found this post, that explaines that this is a class specific interface descriptor. I'll have to look into this some more.