Genuine micro SD cards for Cyton Daisy board [resolved]

wjcroft Hi. I got the following reviews from Amazon.com warning of fake SanDisk micro SD cards (https://www.amazon.com/SanDisk-400GB-Extreme-microSD-Adapter/dp/B07FCQRN9K/ref=mp_s_a_1_5?keywords=400gb+micro+sd+card&qid=1570023594&s=gateway&sprefix=400&sr=8-5):-

C. Finley·January 19, 2019
1.0 out of 5 starsVerified Purchase
Capacity: 128GBStyle: Card Only
Counterfeit SanDisk memory cards
It's a counterfeit memory card ... my reviews get disappeared now for the fourth time ... apparently bad reviews for fake memory cards are routinely censored ... who knew? I did!
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Larry Lopez·November 29, 2018
1.0 out of 5 starsVerified Purchase
Capacity: 128GBStyle: Card Only
Either fake or defective
First red flag was when I looked underneath the card. Instead of being solid black like every other SD card I've seen, it looked like a green circuit board with a strange black square on it. Second red flag was the MUCH lower than advertised read/write speeds... See more
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Amazon Customer·October 14, 2018
2.0 out of 5 starsVerified Purchase
Capacity: 128GBStyle: Card Only
Advertised read speed is false!
SanDisk advertises this as the fastest read UHS-I in the market (160mb)! Multiple tests on the 128GB don't confirm this claim. I tested the card on my Surface pro (2017), Surface GO and XPS 13 and got only 88mb read speed and 84 write speed at best!! My Samsung Evo select 128GB & 256GB have higher read and write speed.
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DagDerNiT·October 2, 2018
1.0 out of 5 starsVerified Purchase
Capacity: 64GBStyle: Card Only
SanDisk 64GB (3) A2 Corrupted itself after week of light use!
I have several mini memory cards from last year and none were fast enough for the new Dji Mavic Pro 2 or the ZOoom. There was even a warning that popped up on the GO 4 app that will say SLOW where the sd card info is. After installing the Sandisk Extreme U3 A2, the SLOW warning disappeared and all is well. Havent been able to use as the weather here in the great Pacific NW has been rainy but once the sun comes back I am flying!

Update October 21st, 2018
I ended up installing the microsd in my new Moto Z2 Force Smartphone right after the review, since the weather for flying the drone won't be nice again till next year. It worked awesome in the Moto for over a week until it died and said it became corrupted. I had many photos and videos that were transferred and lost. Called and emailed support and was asked to jump through hoops so am not very happy about the card and experience with it. Will be buying a different brand and hoping for a better ending.

Could you kindly refer me to a website where I can order online for genuine 400GB micro SD cards suited to recording EEG data on the Cyton Daisy board? My 2GB RAM Samsung netbook has a slot for micro SD cards.