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An external CD/DVD SuperDrive. SuperDrive is the product name for a floppy disk drive and later an optical disc drive made and marketed by Apple Inc. The name was initially used for what Apple called their high-density floppy disk drive, and later for the internal CD and DVD drive integrated with Apple computers.
The 12-inch Retina MacBook (early 2015) has only one expansion port, a USB-C port that supports charging, external displays, and Target Disk Mode. Using Target Disk Mode on this MacBook requires a cable that supports USB 3.0 or USB 3.1, with either a USB-A or USB-C connector on one end and a USB-C connector on the other end for the MacBook. [5]
Like the UniDisk 3.5, the Apple 3.5 Drive includes Apple II-specific features such as a manual disk eject button and a daisy-chain connector which allows two drives to be connected to an Apple II computer. The Macintosh however could still only accommodate one external drive, and ignores use of the eject button.
Circuit components of the external USB SuperDisk for Macintosh. The drive itself is the same size as a standard 3.5″ floppy drive, but uses an ATA interface. On the right is the USB-to-ATA adapter, which plugs into an intermediate fan-out and power supply daughterboard that is inside the rear of the Mac drive's casing.
Other external or dockable peripherals that have expandable removable media capabilities, usually via a USB port or memory card reader. USB hubs; Wired or wireless printers; Network routers, access points and switches; Using removable media can pose some computer security risks, including viruses, data theft and the introduction of malware. [6]
With both types of mechanisms, if a CD or DVD is left in the drive after the computer is turned off, the disc cannot be ejected using the normal eject mechanism of the drive. However, tray-loading drives account for this situation by providing a small hole where one can insert a paperclip to manually open the drive tray to retrieve the disc. [39]
The external models were installed in a Zip-drive-style case, and used standard USB 1.1 connections. Iomega used the DirectCD software from Adaptec to allow UDF drive-letter access to CD-R or CD-RW media. The company released an open standard CD-R drive and CD-RW media under the same ZipCD name.
It is a serial protocol. In disk drives usually the Fibre Channel Arbitrated Loop (FC-AL) connection topology is used. FC has much broader usage than mere disk interfaces, and it is the cornerstone of storage area networks (SANs). Recently other protocols for this field, like iSCSI and ATA over Ethernet have been developed as well.