Hi, I have an Apple IIe card in my Mac LC, and I would like to hook up a 5.25 drive. The manual says to use a "gray" 5.25" drive, "not the Disk II, UniDisk 5.25, or DuoDisk." Could someone please tell me the model number of the "gray" drive then? People describe them to me as "platinum" or"yellowed with age," and I would much rather go by model number. Plus I am color-blind. TIA, Charles