Exclusive: First 2TB MicroSD card is now on sale and no, it is not expensive at all — Taiwanese company makes my dream of building a petabyte-in-a-shoebox project become true

AGI 2TB microSD card
(Image credit: AGI)

Almost one year after the first 1.5TB microSD card went on sale, a little known company called AGI has piped Kioxia to the post by putting the first ever 2TB microSD card on sale, a candidate for our best microSD card buying guide. 

At only $229 plus delivery (that's about £180, AU$344) from popular US retailer Newegg, the Supreme Pro TF138 carries a premium due to its current status as the only commercially available 2TB microSD card. 

The card is also listed on Amazon.com but has yet to get a price.

125 grams of Petabyte goodness

AGI claims that the card can reach read/write speeds of up to 170/160MBps although that requires a proprietary compatible card reader - the CR138 - to achieve these numbers. Other features on its spec sheet includes an automatic error correction function, UHS-1 U3 high speed protocol, V30/A2 compatibility and all sort of proofing (dust, water, shock, magnetic and X-ray). In other words, the card is more than fast enough for 4K video capture.

Kioxia announced the first 2TB microSD card - the Exceria Plus -  in September 2022 and said it had started to mass produce them in December 2023. Now you CAN buy a 2TB microSD for less, there’s plenty around on eBay, Amazon and Aliexpress but they are all 100% fakes

But not this one, why I’m so sure? For a start, we were sent a press release (never happens with fakes) and AGI does a LOT of other products. Finally, it’s worth also watching this video of the launching ceremony of the card, last month in somewhere in Asia, a video that contains a lot more information about the product including the nifty embedded temperature sensor.

Micron cracked the 1TB barrier 18 months ago with its 1.5TB MTSD1T5ANC8MS-1WT, a card that still carries a rather steep price tag, almost a year after launch. A mitigating factor is that this is an industrial microSD card which means that it has a set of far more stringent characteristics to follow like the ability to remotely update its firmware, 24/7 video recording and a whopping 2 million hour mean time to failure rating.

Since then SanDisk launched another 1.5TB microSD card, the SDSQUAC-1T50-GN6MA, which costs a mere $149.99. At the time of writing, genuine 1TB microSD cards can be sourced from Amazon for around $55 so there's some margin for cuts. 

Curiously, some of the biggest names in storage cards (Samsung, Lexar, Kingston) have yet to release products with a capacity bigger than 1TB.

A microSD card remains the smallest mainstream removable storage media; with dimensions of 15 x 11 x 1mm for a weight of 0.25g, you can easily fit 500 AGI Supreme Pro TF138 in a small box barely bigger than a standard 3.5-inch hard disk drive and weighing less than the iPhone 15. 

Small enough to fit in the palm of your hand; 500 of these cards will deliver a total capacity of one Petabyte at a cost of about $100,000; yes, that was a purely academic exercise but shows the potential of the world’s most dense storage media.

I have approached AGI for a review sample and will report back as soon as I get a test product.

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Desire Athow
Managing Editor, TechRadar Pro

Désiré has been musing and writing about technology during a career spanning four decades. He dabbled in website builders and web hosting when DHTML and frames were in vogue and started narrating about the impact of technology on society just before the start of the Y2K hysteria at the turn of the last millennium.