INT 2F - CATC USB4DOS Device Manager - HUB DEVICE ATTACHED                      
	AX = BC00h
	BL = 03h
	BH = address and device type
	    bits 7-1: USBsee Universal Serial Bus address of hub
	    bit 0: device speed
		=0 low-speed device
		=1 full-speed device
	CX:DX -> callback function
Return: AX = USBsee Universal Serial Bus address of attached device, or 0000h on failure
SeeAlso: AX=BC00h/BL=04h,AX=BC00h/BL=00h