www.pudn.com > usbboot-v1.2.rar.zip > Usb_Boot_Interface.h, change:2007-04-25,size:428b

// interface.h - device interface classes for Jz4740_usb 
 
// This GUID identifies the device interface class used by the Jz4740_usbDevice device 
 
// TODO:	If your driver supports a standard interface, use the GUID that identifies 
//			the interface class, rather than using the one defined below 
 
#define Jz4740_usbDevice_CLASS_GUID \ 
 { 0x198b2804, 0x759e, 0x4e55, { 0xaf, 0xd9, 0x91, 0x84, 0xd6, 0x6f, 0x81, 0x6a } }