faulty microsdhc card reader on TF700?

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I just got my Sandisk Ultra 32gb microsdhc UHS-1 (Class 10) card from http://www.amazon.com/gp/product/B00...ls_o01_s00_i00 today and my TF700 (rooted) is unable to mount the SD Card. Everytime I try to "Mount External Storage" from settings, it displays "Preparing External Storage" for 1 second and then disappears, with no SD card mounted. I've formatted this SD card using FAT32 (4kb, 8kb, and 16kb cluster sizes), NTFS, and exFAT file systems as well as using my phone (Droid X) and none of them have been able to be mounted on my TF700, although the FAT32 formatted SD card was able to be mounted/recognized by my Droid X. However, I'm still not even sure if it's a faulty card or a faulty card reader because my TF700 was perfectly able to recognize and mount my phone's 16gb microsdhc card (class 2 or 4) without any problems.

I've read in another thread (http://forum.xda-developers.com/show....php?t=1761861) that people were having some trouble using microSDXC cards, but the one I have is just microSDHC (UHS-1), so there shouldn't be any problems recognizing it. Does anyone else have any idea what the problem might be?

Originally Posted by wh06010

I just got my Sandisk Ultra 32gb microsdhc UHS-1 (Class 10) card from http://www.amazon.com/gp/product/B00...ls_o01_s00_i00 today and my TF700 (rooted) is unable to mount the SD Card. Everytime I try to "Mount External Storage" from settings, it displays "Preparing External Storage" for 1 second and then disappears, with no SD card mounted. I've formatted this SD card using FAT32 (4kb, 8kb, and 16kb cluster sizes), NTFS, and exFAT file systems as well as using my phone (Droid X) and none of them have been able to be mounted on my TF700, although the FAT32 formatted SD card was able to be mounted/recognized by my Droid X. However, I'm still not even sure if it's a faulty card or a faulty card reader because my TF700 was perfectly able to recognize and mount my phone's 16gb microsdhc card (class 2 or 4) without any problems.

I've read in another thread (http://forum.xda-developers.com/show....php?t=1761861) that people were having some trouble using microSDXC cards, but the one I have is just microSDHC (UHS-1), so there shouldn't be any problems recognizing it. Does anyone else have any idea what the problem might be?

Everyone's having issues with microSD cards lol...Strange that SDHC and SDXC both aren't working right. Does anyone else have a SDHC card that is working? I can look at it when I get my tablet tomorrow, but I'm not sure if I have a SDHC card laying around.

I've just confirmed that my 32gb class 10 (UHS-1) card formatted in FAT32 works on 2 separate phones but is not recognized by my TF700 (32gb grey model). I've also confirmed that the TF700 is able to recognize and mount two separate 16gb microsdhc cards (class 2 or 4, obviously not UHS) formatted in FAT32. I'm beginning to wonder if it's just the UHS-1 compatibility that's causing the problem (maybe TF700's are not compatible with UHS speeds?) or if 32gb is too much for the TF700.

I have a 32gb microsdhc (and no at the moment I can't tell you anything about the class or speed or whatever) but I can say it works fine where my 64gb sdxc won't mount.

Originally Posted by KilerG

Everyone's having issues with microSD cards lol...Strange that SDHC and SDXC both aren't working right. Does anyone else have a SDHC card that is working? I can look at it when I get my tablet tomorrow, but I'm not sure if I have a SDHC card laying around.

wait what? so i can't use an microsd card with this tablet no matter what kind of card is?

Originally Posted by nooktablet

wait what? so i can't use an microsd card with this tablet no matter what kind of card is?

It looks to me like people are specifically having issues with UHS-1 cards. There's like a 6 page thread about it in the General forum. I know my 16GB microSDHC (not UHS-1) works perfectly fine.

im trying to buy one on amazon, can anyone post a 32gb that works

Originally Posted by wh06010

I just got my Sandisk Ultra 32gb microsdhc UHS-1 (Class 10) card from http://www.amazon.com/gp/product/B00...ls_o01_s00_i00 today and my TF700 (rooted) is unable to mount the SD Card. Everytime I try to "Mount External Storage" from settings, it displays "Preparing External Storage" for 1 second and then disappears, with no SD card mounted. I've formatted this SD card using FAT32 (4kb, 8kb, and 16kb cluster sizes), NTFS, and exFAT file systems as well as using my phone (Droid X) and none of them have been able to be mounted on my TF700, although the FAT32 formatted SD card was able to be mounted/recognized by my Droid X. However, I'm still not even sure if it's a faulty card or a faulty card reader because my TF700 was perfectly able to recognize and mount my phone's 16gb microsdhc card (class 2 or 4) without any problems.

I've read in another thread (http://forum.xda-developers.com/show....php?t=1761861) that people were having some trouble using microSDXC cards, but the one I have is just microSDHC (UHS-1), so there shouldn't be any problems recognizing it. Does anyone else have any idea what the problem might be?

did you use SDFormatter to format the card? it might be good idea to do so prior to initial use.

My 32gb class 2 SDHC works fine. but my 64gb sdxc, which was fine in my xoom, is not recognized. Both are formatted the same

This is interesting. I have a dock and when I put the microsd into the SD converter, it works great. But if I take it out of the converter and put it in as a micro into the pad, the pad knows it is there, but will not mount it. This is very strange.