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The USB mass storage device class (also known as USB MSC or UMS) is a set of computing communications protocols, specifically a USB Device Class, defined by the USB Implementers Forum that makes a USB device accessible to a host computing device and enables file transfers between the host and the USB device. To a host, the USB device acts as an ...
USB Attached SCSI (UAS) or USB Attached SCSI Protocol (UASP) is a computer protocol used to move data to and from USB storage devices such as hard drives (HDDs), solid-state drives (SSDs), and thumb drives. UAS depends on the USB protocol, and uses the standard SCSI command set.
The USB OTG and Embedded Host Supplement to the USB 2.0 specification introduced three new communication protocols: . Attach Detection Protocol (ADP): Allows an OTG device, embedded host or USB device to determine attachment status in the absence of power on the USB bus, enabling both insertion-based behavior and the capability to display attachment status.
Since the introduction of SD cards, few companies build MMC slots into their devices (an exception is some mobile devices like the Nokia 9300 communicator in 2004, where the smaller size of the MMC is a benefit), but the slightly thinner, pin-compatible MMCs can be used in almost any device that can use SD cards if the software/firmware on the ...
The table below identifies each notable operating system and the first version supporting the command. Additionally, older solid-state drives designed before the addition of the TRIM command to the ATA standard will need firmware updates, otherwise the new command will be ignored. However, not every drive can be upgraded to support trimming.
Samsung [17] South Korea: Captive Yes Yes Yes SK Hynix: South Korea: Captive Yes Yes No SandForce [18] Acquired by Seagate Technology: United States Captive Yes Yes No Silicon Motion [19] Taiwan: Independent Yes Yes Yes Starblaze [20] China Independent Yes No No sTec [21] Acquired by HGST then Western Digital: United States Captive Yes Yes No ...
Samsung Electronics [33] South Korea Formerly, but sold that business to Seagate [34] Yes Yes No Yes SanDisk: United States No Formerly, through a joint venture with Toshiba Formerly, now a brand of WD: No Formerly, now a brand of WD: Seagate Technology [35] United States and Ireland Yes Yes, through stake in Kioxia: Yes No
Music is transferred through an MTP device allowing Windows, Linux, and Android users to download music files from their computer, while Mac OS X requires Android File Transfer for its MTP access. The phone's non-music storage is accessible with BitPim , an open source and multi-platform application to access CDMA phones of various cellphone ...