Wikipedia:Reference desk/Archives/Computing/2020 July 14

= July 14 =

SD card input port to USB
I have a device that accepts SD cards. The device writes to the SD card when prompted. Is there a device I could buy that would act like an SD card with a cable attached to a USB male end, so I can read that info as soon as its written? As if I took the SD card out and inserted it into my laptop and read the data myself. Is this possible? — Preceding unsigned comment added by 98.253.181.100 (talk) 14:25, 14 July 2020 (UTC)


 * The nearest thing I'm aware of is wifi-enabled SD card adapters (like Toshiba's FlashAir), which pass stored stuff through to a microSD card, but which make that stored data available on a wifi hotspot. Almost all the info I can find about these is people putting them in cameras and accessing the photos on phones or tablets, although some (at least the later FlashAir) seem to have browser support too (and/or a special windows downloader program) - I've not seen any that offer a normal SMB fileshare. And this is still store-and-forward, not quite the direct access you're asking about. -- Finlay McWalter··–·Talk 15:10, 14 July 2020 (UTC)


 * Do you have a USB connector as well? The only device that I've ever seen that does what you want to do requires an SD card slot and a USB slot. It then lets you plug an SD card or a USB device into the adapter, which feeds into the SD card slot. Overall, you lose a USB connector. So, I find it to be a silly device - you give up a USB slot so you can plug a USB into the SD card slot. From a technical point of view, the issue is that SD cards and USB devices have different protocol and power requirements. So, it isn't just a matter of moving the wires around. 97.82.165.112 (talk) 18:01, 14 July 2020 (UTC)
 * It looks like "Mobiadapter" is one brand of such a thing, if I'm understanding you correctly. The point of it is for using USB Mass Storage devices with devices that only have an SD card slot. This is almost but not exactly what the poster requested, since it exposes not a USB device endpoint but a USB host that supports the Mass Storage device class. If you want a "live" readout of what's written to the SD card slot you then need to plug into the USB port and emulate a mass storage device, but there's probably software to do this. --47.146.63.87 (talk) 20:15, 14 July 2020 (UTC)