Windows 10 Laptop Question
When I insert an SD card, it is not recognized. If I remove it, restart and reinsert it, it is recognized. Any thoughts on how to correct this problem?
Forum Discussion
wa8yxm wrote:
Just so you know my Win-10 box has an SD card slot in the side. it's part of the Computer not a USB device the CD-RW is a USB device, the Cassette Tape player is a USB device. the Big Ham Radio is Three USB devices. The Printer is a USB device ((You ask 3, on the radio Computer control. Push to talk and Audio))
There are more (the external half a terrabyte hard drive) but the SD card is a slot in the side of the computer..
Sometimes it does fail to see the card. other times it sees it straight off.
Hate to tell you, just because the SD card slot is "built in" to the "box", it doesn't mean it bypasses the on board USB controller hardware on the MB.
PC manufacturers have only a couple of ways of interfacing external devices from the MB.
Very few devices have direct access to processor or memory.
Generally that is pretty much done through PCI, PCI-E expansion card slots OR one can use existing USB controller/hubs onboard..
Even your internal SATA hd controller is funneled through a PCI or PCI-E expansion controller..
That means on a laptop, ALL built in devices like your keyboard, touchpad, webcam and yes, SD card reader are interfaced through a USB controller/hub..
On desktop PCs ANY built in SD card readers WILL be interfaced to the MB using a USB controller/hub.. Basically it plugs into a USB header on the MB (IE, you won't find a USB looking plg inside the box)..
