A:AnswerI don't own a Nook Simple Touch, but I found this guidance on the Barnes and Noble site-
You can expand your NOOK Simple Touch's memory using microSD memory cards up to 32GB. The microSD card slot is found under the small rubber latch in the upper right corner on the side of your unit.
So it appears the answer is yes these Micro SD cards can be used.
A:Answeryes i was told a SD card is not included. And we recommend you to use a qualified Class 10 micro SDHC card. The max capacity supported is 32GB.
A:AnswerDownload rates. I can say I filled this with music and it stuck there at 75% of the rated download rate so I would have to say that the bottleneck isn't caused by the card. Also different types of files take different different amounts of times to download. If you want blazing download speeds buy a thumb drive which supports USB 3.0 because it is going to outperform a SD mini card. I would recommend the item for sure but you are looking for something in this card which can be obtained elsewhere for less money.
A:AnswerA "micro SD" card is quite a bit smaller than a "SD" card, which is what is required for the H4N. However, there is SD card adaptor that you can purchase for your MicroSD that will allow it to work with your recorder.
https://www.bestbuy.com/site/kingston-128gb-microsdxc-uhs-i-memory-card/4590608.p?skuId=4590608
This link shows a MicroSD card, and the SD Card adapter.