My new card when tested is reporting a read speed of 90MB/s and 88 for write do i have a problem with this card??

That's not the correct speed for the 700s card That's the speed of the slower 300s or 500s cards

Does this work on the canon eos r6 or mirrorless cameras in general or just dslr cameras?

Hi John, I've been using this card with EOS R for about two years and I do believe that R6 uses same kind of cards. Not 100% sure but at least with R I can recommend. Although I would recommend to check out also other alternatives since this is few years old card. Maybe there's other more cabable cards available?

What can you use it in.

I brought it to use in in camera

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Transcend 8GB SDC300S SD UHS-I SDHC Memory Card, C10, 1080p Full HD | Compatible with Legacy DSLRs, Trail Cameras, Digital Camcorders, Audio Recorders

Product ID: 125951789

Details

Brand
Transcend
Compatible devices
Camera
Flash memory type
SDHC
Memory storage capacity
8 GB
Model name
SDC300S

⚡20 MB/s read speed

💾8GB storage capacity

🛡️Rugged & durable design

6173 kr

Duties & taxes included

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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Store Fast, Shoot Faster – Never Miss a Moment!

COMPACT YET MIGHTY - 8GB of premium Class 10 storage in a sleek, lightweight design that fits perfectly in your professional toolkit.
BLAZING FAST TRANSFERS - Up to 20MB/s read and 10MB/s write speeds keep your workflow seamless and efficient.
DATA INTEGRITY GUARANTEED - Advanced error correction technology protects your files from corruption during every transfer.
BUILT TO BRAVE THE ELEMENTS - Shockproof, waterproof, X-ray proof, and temperature resistant from -25°C to 85°C for ultimate reliability.
VERSATILE DEVICE COMPATIBILITY - Plug-and-play with cameras, laptops, and tablets—no drivers needed, just instant access.

The Transcend SDC300S 8GB SDHC Class 10 memory card delivers reliable high-speed performance with up to 20MB/s read and 10MB/s write speeds. Engineered for professionals on the go, it offers rugged durability—shockproof, waterproof, X-ray proof, and temperature resistant—ensuring your data stays safe in any environment. Compatible with a wide range of devices and featuring built-in error correction, this plug-and-play card is the perfect storage companion for digital cameras, laptops, and tablets.

Specifications

ASIN	B07JHGX99K
Best Sellers Rank	23,148 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 87 in SD Cards
Box Contents	flash memory card
Brand Name	Transcend
Colour	Black
Compatible Devices	Camera
Customer Reviews	4.6 4.6 out of 5 stars (6,406)
EU Spare Part Availability Duration	1 Years
Flash Memory Type	SDHC
Global Trade Identification Number	00760557842774
Hardware Connectivity	SDXC
Item Dimensions D x W x H	10D x 48W x 50H centimetres
Item Dimensions L x W	32L x 24W millimetres
Item Type Name	Transcend 8GB Premium 300S SDHC Memory Card Class 10
Item Weight	0.01 Kilograms
Manufacturer	Transcend
Manufacturer Part Number	TS8GSDC300S
Media Speed	10MB/s
Memory Storage Capacity	8 GB
Model Name	SDC300S
Model Number	TS8GSDC300S
Number of Items	1
Number of Packs	1
Product Features	Drop Proof, Static proof, Temperature resistant -25°C (-13°F) ~ 85°C (185°F), Water Proof, X Ray Proof
Product Warranty	Five-year Limited Warranty
Read Speed	20 Megabytes Per Second
Secure Digital Association Speed Class	Class 10
UPC	760557842774
Unit Count	1.0 count
Warranty Type	Five-year Limited Warranty

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