https://devzone.nordicsemi.com/f/nordic-q-a/61633/usb-data-transfer-rate-with-usb-mscHello Nordic support, I am using the usb_msc example with an SD card. When I check this example on a Windows 10 machine, I observe data transfer rate of 355 Kbps. Is it possible to get a higher data transfer rate? Regards, Anushaen-USTelligent Community 13Wed, 20 May 2020 12:42:51 GMThttps://devzone.nordicsemi.com/thread/250980?ContentTypeID=1Wed, 20 May 2020 12:42:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cfc17901-a854-4f09-89e0-de441cd28492Turbo J[quote userid="89264" url="~/f/nordic-q-a/61633/usb-data-transfer-rate-with-usb-msc"]Is it possible to get a higher data transfer rate[/quote] <p>Possible: Yes. But also rather difficult.</p> <p>You need to use the (bug-ridden, see errata) SPIM3 in order to achieve 16MHz on the SD cards SPI bus. On top of that you need to read from the SD and write to USB <em>at the same time</em>. The latter requires some non-trivial buffering.</p> <p>Maximum possible is roughly 1 MByte/sec if everything works flawlessly. That is only ~3x your current data rate...</p><div style="clear:both;"></div>