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The article mistakenly says "microSDXC slots" when it means "microSD" slot. Because SD, SDHC and SDXC all have the same physical form factor and slot you put th
by stefan_ 7y ago
The article mistakenly says "microSDXC slots" when it means "microSD" slot. Because SD, SDHC and SDXC all have the same physical form factor and slot you put them into, but vastly different electrical interfaces and protocols.
And yes, older versions like SD literally did not have the bits to even communicate cards with 512 GiB.
- muterad_murilax 7y ago> The article mistakenly says "microSDXC slots" when it means "microSD" slot. No, I think it's correct. From Wikipedia [0]: SDSC: 1 MiB to 2 GiB SDHC: 2 GiB to 32 GiB SDXC: 32 GiB to 2 TiB SDUC: 2 TiB to 128 TiB [0] https://en.m.wikipedia.org/wiki/SD_card https://en.m.wikipedia.org/wiki/SD_card
- stefan_ 7y agoYes, all four of those as "micro" go into the same "slot".
- muterad_murilax 7y agoMy point is that a "400 GB" card and a 512 GB card both are SDXC cards...
- wyldfire 7y agoBut the reference is to a slot and not a card.
- muterad_murilax 7y agoSo it's a microSDXC slot that doesn't support all microSDXC cards. Q.E.D.
- makomk 7y agoSD, SDHC, and SDXC are all electrically the same (though newer cards can also optionally support higher-speed interface variants with different signalling voltages), it's just that the original SD protocol didn't have enough bits in the protocol to support higher capacities. SDHC and SDXC are basically the same except that one uses FAT32 and the other uses exFAT as its standard format. You can often use cards above the official 32GB limit in SDHC devices if you can format them as FAT32. A lot of older SD card slots can also be made to support SDHC with a suitable firmware or driver upgrade because the protocols are really similar, but with some fields just being interpreted slightly differently.