Bulk Transfers. Bulk Transfers are used for data which are not of the type Control, Interrupt, or Isochronous. Reliable exchange of data is ensured at the hardware level using error detection. Data are transferred in the same manner as in Interrupt Transfers, but have no defined polling rate.
With a USB cable, connect your device to your computer. On your device, tap the "Charging this device via USB" notification. Under "Use USB for," select File Transfer. A file transfer window will open on your computer.
Signaling rate (transmission rate) ModeAbbrev.Signaling rate Full speed FS 12 Mbit/s (1.5 MB/s) High speed; also, Hi-speed HS 480 Mbit/s (60 MB/s) SuperSpeed SS 5 Gbit/s (625 MB/s) SuperSpeed+ SS+ 10 Gbit/s (1.25 GB/s)4 more rows
For low-speed devices up to 8 bytes. For full-speed devices, up to 64 bytes. For high-speed, high-bandwidth devices, the app can send or receive more than maximum packet size up to 3072 bytes per microframe. Interrupt endpoints on SuperSpeed devices are capable of transmitting even more number of bytes.
What are the USB data transfer rates and specifications? USB 1.0/Low-Speed: 1.5 Megabits per second (Mbps) USB 1.1/Full-Speed: 12 Mbps. USB 2.0/Hi-Speed: 480 Mbps. USB 3.0/SuperSpeed: 5 Gbps. USB 3.1/SuperSpeed: 10 Gbps.
USB Full speed has a speed of 12 MBit/second = 1,5 MByte/s. But within these 12 MBit also a lot of extra data is transmitted which is not payload, like , endpoint address, CRC5, CRC16, Acknowledge, SOF + EOF packets, etc.. Additionally the bus manager reserves 10% of a frame for Control Transfers.
Maximum packet size of a bulk endpoint depends on the bus speed of the device. For full speed, high speed, and SuperSpeed; the maximum packet sizes are 64, 512, and 1024 bytes respectively.
USB Standards StandardAlso Known AsMax. Data Transfer Speed USB 1.1 Full Speed USB 12 Mbps USB 2.0 Hi-Speed USB 480 Mbps USB 3.2 Gen 1 USB 3.0 USB 3.1 Gen 1 SuperSpeed 5 Gbps USB 3.2 Gen 2 USB 3.1 USB 3.1 Gen 2 SuperSpeed+ SuperSpeed 10Gbps 10 Gbps3 more rows
USB has four transfer types depending on the data. They are called Control, Bulk, Interrupt, and Isochronous types.