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CCID (chip card interface device) protocol is a USB protocol that allows a smartcard to be connected to a computer via a card reader using a standard USB interface, without the need for each manufacturer of smartcards to provide its own reader or protocol. [1]
A number of extensions to the USB Specifications have progressively further increased the maximum allowable V_BUS voltage: starting with 6.0 V with USB BC 1.2, [50] to 21.5 V with USB PD 2.0 [51] and 50.9 V with USB PD 3.1, [51] while still maintaining backwards compatibility with USB 2.0 by requiring various forms of handshake before ...
Internal card readers are usually connected to internal USB 1.1 / 2.0 / 3.x ports The number of compatible memory cards varies from reader to reader and can include more than 20 different types. The number of different memory cards that a multi card reader can accept is expressed as x-in-1, with x being a figure of merit indicating the number ...
Written by Realtek et al. rtw88_8723de Realtek RTL8723DE b/g/n Yes Yes Dual GPLv2 and BSD Written by Realtek et al. rtw88_8822cu Realtek RTL8822CU a/b/g/n /ac Yes Yes Dual GPLv2 and BSD Written by Realtek et al. rtw88_8822bu Realtek RTL8822BU a/b/g/n /ac Yes Yes Dual GPLv2 and BSD Written by Realtek et al. rtw88_8821cu Realtek RTL8821CU a/b/g/n ...
An additional advantage of memory cards is that many consumer devices (e.g., digital cameras, portable music players) cannot make use of USB flash drives (even if the device has a USB port), whereas the memory cards used by the devices can be read by PCs with a card reader.
Several consumer devices with UFS card slots have been released in 2020. On 08 December 2022, IQOO announced the IQOO 11 which was the first phone to release with UFS 4.0. [ 26 ] After that, other Android OEMs started using this storage solution on their flagship to upper mid-range category smartphones.