SDXC versus Micro SDXC cards

**aslyfox** · 10-08-2019, 10:45 AM

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Originally posted by Not a Number

If something goes wrong don't blame Ricoh/Pentax. They warned you not to use microSD cards with adapters.

you are correct

the posts in this thread have been very interesting and informative

still haven't figured out what I will do personally

I do have lots of micro cards

I may keep knocking on wood

**UncleVanya** · 10-08-2019, 11:55 AM

Originally posted by aslyfox

you are correct

the posts in this thread have been very interesting and informative

still haven't figured out what I will do personally

I do have lots of micro cards

I may keep knocking on wood

I have done it too. Never been an issue but also it is an infrequent situation since I only do it on occasion. None of my primary cards are micro.

EDIT: all of my occasional uses have been on K-3 as far as Pentax use.

MarkJerling · 10-08-2019, 12:33 PM

Originally posted by aslyfox

you are correct

the posts in this thread have been very interesting and informative

still haven't figured out what I will do personally

I do have lots of micro cards

I may keep knocking on wood

You're a braver man than me Allen.
I won't risk it in the K-1.

**aslyfox** · 10-08-2019, 12:38 PM

Originally posted by MarkJerling

You're a braver man than me Allen.
I won't risk it in the K-1.

some times, it isn't bravery

it may be just being stubborn

will I buy any more micros ??

that may be the question

fsge · 10-08-2019, 12:42 PM

I also avoid using micro SDs, keep them for handsets.

MarkJerling · 10-08-2019, 01:54 PM

Originally posted by aslyfox

some times, it isn't bravery

it may be just being stubborn

will I buy any more micros ??

that may be the question

Well, they're handy in the phone. So, I do have a few, but they stay in the phone, so no adapter usage.

stevebrot · 10-09-2019, 10:21 AM

Originally posted by MarkJerling

Well, they're handy in the phone. So, I do have a few, but they stay in the phone, so no adapter usage.

Same here. If I need to move files, I do it using Bluetooth or USB.

Steve

**aslyfox** · 10-10-2019, 09:08 AM

if any one is interested in SD cards:

Great Deal on Lexar Memory Cards at Amazon -- 64 GB 95 Mbps U3 $9.99 - PentaxForums.com

Kingman · 10-31-2019, 11:42 AM

For giggles I purchased a couple of 1 TB Huawei Micro SDXC Cards with adapter for about $10-11 each. An amazing price. I just received them and formatted the 1TB card in my K1 and it works just fine.
Huawei 256GB 512GB 1024GB SD Memory Card Class 10 TF Flash Memory Card | eBay

madbrain · 12-14-2019, 04:41 PM

Originally posted by Kingman

For giggles I purchased a couple of 1 TB Huawei Micro SDXC Cards with adapter for about $10-11 each. An amazing price. I just received them and formatted the 1TB card in my K1 and it works just fine.
Huawei 256GB 512GB 1024GB SD Memory Card Class 10 TF Flash Memory Card | eBay

This is for sure a fake card. Stop using it immediately before you lose your data.

Test it with h2testw to confirm this.

https://photographylife.com/fake-memory-cards

brewmaster15 · 12-14-2019, 06:17 PM

I use a few of the micros as I have them for phones and tablets... family of 4 here with lots of gadgets. I have not had any issues with the
micros though I only use Sandisks for them. I honestly dont use them much in my cameras... k20ds mostly.. sometimes k3s. Most of the times I use standard size Sds like Extremes.

I have to wonder if the melted cards might possibly be not caused directly by the micro card but the adapter. You can build a great microSd that functions awesome in a phone... stick it in an adapter with cheap contacts and Lots of resistence and I can see the micros heating up.

I have had issues with some of the adapters not working well. Slow read write speeds ... swap the adapter with a different one and its like night and day.
Al

Steve... samsung s5? Thought I was the only one still using that phone.

Kingman · 12-15-2019, 11:44 AM - **1 Like**

Originally posted by madbrain

This is for sure a fake card. Stop using it immediately before you lose your data.

Test it with h2testw to confirm this.

https://photographylife.com/fake-memory-cards

"madbrain" : I down loaded the test utility you suggested and the card did indeed fail! I tested them several times and they failed at different capacities. Before reading your post, I did upload to the card some files from my computer and used them in my K1, but never to the capacity that was stated on the test utility or of course the stated 1024GB capacity. I have since fired off to the specific eBay provider a WTF e-mail. Lesson learned. Thanks... $20+ wasted, live and learn...Thanks again!

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10-08-2019, 10:45 AM	#46
aslyfox Seeker of Knowledge Join Date: Aug 2016 Location: Topeka, Kansas Photos: Gallery \| Albums Posts: 24,581	Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. Originally posted by Not a Number If something goes wrong don't blame Ricoh/Pentax. They warned you not to use microSD cards with adapters. you are correct the posts in this thread have been very interesting and informative still haven't figured out what I will do personally I do have lots of micro cards I may keep knocking on wood

10-08-2019, 11:55 AM	#47
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,401	Originally posted by aslyfox you are correct the posts in this thread have been very interesting and informative still haven't figured out what I will do personally I do have lots of micro cards I may keep knocking on wood I have done it too. Never been an issue but also it is an infrequent situation since I only do it on occasion. None of my primary cards are micro. EDIT: all of my occasional uses have been on K-3 as far as Pentax use.

10-08-2019, 12:33 PM	#48
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,406	Originally posted by aslyfox you are correct the posts in this thread have been very interesting and informative still haven't figured out what I will do personally I do have lots of micro cards I may keep knocking on wood You're a braver man than me Allen. I won't risk it in the K-1.

10-08-2019, 12:38 PM	#49
aslyfox Seeker of Knowledge Join Date: Aug 2016 Location: Topeka, Kansas Photos: Gallery \| Albums Posts: 24,581	Originally posted by MarkJerling You're a braver man than me Allen. I won't risk it in the K-1. some times, it isn't bravery it may be just being stubborn will I buy any more micros ?? that may be the question

10-08-2019, 12:42 PM	#50
fsge Veteran Member Join Date: Jun 2010 Location: Genf Posts: 1,138	I also avoid using micro SDs, keep them for handsets.

10-08-2019, 01:54 PM	#51
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,406	Originally posted by aslyfox some times, it isn't bravery it may be just being stubborn will I buy any more micros ?? that may be the question Well, they're handy in the phone. So, I do have a few, but they stay in the phone, so no adapter usage.

10-09-2019, 10:21 AM	#52
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by MarkJerling Well, they're handy in the phone. So, I do have a few, but they stay in the phone, so no adapter usage. Same here. If I need to move files, I do it using Bluetooth or USB. Steve

10-10-2019, 09:08 AM	#53
aslyfox Seeker of Knowledge Join Date: Aug 2016 Location: Topeka, Kansas Photos: Gallery \| Albums Posts: 24,581	if any one is interested in SD cards: Great Deal on Lexar Memory Cards at Amazon -- 64 GB 95 Mbps U3 $9.99 - PentaxForums.com

10-31-2019, 11:42 AM	#54
Kingman Senior Member Join Date: Feb 2017 Location: North Texas Posts: 199 Original Poster	For giggles I purchased a couple of 1 TB Huawei Micro SDXC Cards with adapter for about $10-11 each. An amazing price. I just received them and formatted the 1TB card in my K1 and it works just fine. Huawei 256GB 512GB 1024GB SD Memory Card Class 10 TF Flash Memory Card \| eBay

12-14-2019, 04:41 PM	#55
madbrain Veteran Member Join Date: May 2008 Location: San Jose, CA Posts: 1,341	Originally posted by Kingman For giggles I purchased a couple of 1 TB Huawei Micro SDXC Cards with adapter for about $10-11 each. An amazing price. I just received them and formatted the 1TB card in my K1 and it works just fine. Huawei 256GB 512GB 1024GB SD Memory Card Class 10 TF Flash Memory Card \| eBay This is for sure a fake card. Stop using it immediately before you lose your data. Test it with h2testw to confirm this. https://photographylife.com/fake-memory-cards

12-14-2019, 06:17 PM	#56
brewmaster15 Veteran Member Join Date: Jan 2015 Location: CT Posts: 1,860	I use a few of the micros as I have them for phones and tablets... family of 4 here with lots of gadgets. I have not had any issues with the micros though I only use Sandisks for them. I honestly dont use them much in my cameras... k20ds mostly.. sometimes k3s. Most of the times I use standard size Sds like Extremes. I have to wonder if the melted cards might possibly be not caused directly by the micro card but the adapter. You can build a great microSd that functions awesome in a phone... stick it in an adapter with cheap contacts and Lots of resistence and I can see the micros heating up. I have had issues with some of the adapters not working well. Slow read write speeds ... swap the adapter with a different one and its like night and day. Al Steve... samsung s5? Thought I was the only one still using that phone.

12-15-2019, 11:44 AM - 1 Like	#57
Kingman Senior Member Join Date: Feb 2017 Location: North Texas Posts: 199 Original Poster	Originally posted by madbrain This is for sure a fake card. Stop using it immediately before you lose your data. Test it with h2testw to confirm this. https://photographylife.com/fake-memory-cards "madbrain" : I down loaded the test utility you suggested and the card did indeed fail! I tested them several times and they failed at different capacities. Before reading your post, I did upload to the card some files from my computer and used them in my K1, but never to the capacity that was stated on the test utility or of course the stated 1024GB capacity. I have since fired off to the specific eBay provider a WTF e-mail. Lesson learned. Thanks... $20+ wasted, live and learn...Thanks again!