i have a Apple Studio Monitor 17 in M7649 with 2 ea. usb ports on the back. How do i get them to work??? My M7649 LCD connects to my Mac G4 with what I believe is called DVI connection. In the past I have used a DVI-ADC adapter #A1006 EMC # 1918. This is the adapter with a USB line that connectors into the Mac's usb connector along with the DVI monitor connection and gives usb access to the USB ports built into the back of the LCD. I no not where this adapter ran off too (DVI-ADC adapter #A1006 EMC # 1918) is there any other way to get USB access from the Mac (G4) to the LCD????!!!!