Why has this only showing as 116gb nof 128gb??

it is because the disk is being messured @ 1024mb per gig and NOT 1000mb per gig, The manufacturer measures a Gigabyte as "1000 megabytes" while the computer measures it as "1024 megabytes." This is also why your "2 GB" hard drive only has ~1.81 GB (Technically "GiB", or "Gibibytes") of space. I hope that helps!

What is the difference between this znd the regular sandisc 128gb sd card and the extreme card? this looks identical in specs to the regular card.

There’s very little in difference, personally if you’re getting the card for the Nintendo Switch I’d say go for the ultra, the extreme has better read and write speeds but because the system has a cap on the read and write you’ll probably see very little in load times (maybe 1 second better with the extreme) The Nintendo branded ones however are exactly like the ultra cards just slightly more optimised for the switch but again not a noticeable amount.

My card stopped working after 3 months and can’t be formatted or recognised. Any advice or customer aftercare you can offer?

Technically you warranty is with Amazon if that’s where you purchased from so contact the returns department. Alternatively search for Sandisk UK and use your Amazon receipt as proof of purchase again if that’s how you purchased it.

Hi, can I add mp3 music files on this card?

Absolutely, but they can only be played back on a device that allows it, the Nintendo switch doesn't play MP3s

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Description

🎮 Power up your play with the Super Mario Superstar storage boost!

RUGGED RELIABLE - Engineered to withstand water, temperature extremes, and X-rays—your games stay safe no matter where you play.
LEVEL UP YOUR STORAGE - Expand your Nintendo Switch library with a whopping 256GB capacity—never delete a favorite game again.
LIFETIME PEACE OF MIND - Backed by SanDisk’s lifetime limited warranty, ensuring your digital adventures are protected for the long haul.
BUILT FOR THE ULTIMATE GAMER - Officially licensed by Nintendo, perfectly optimized for Switch, Switch OLED, and Lite models.
SPEED THAT KEEPS YOU PLAYING - Experience lightning-fast load times with up to 100MB/s read speeds, so you’re always ready to jump into the action.

The SanDisk 256GB microSDXC card, officially licensed for Nintendo Switch consoles, offers ultra-fast 100MB/s read speeds and robust durability features including water, temperature, and X-ray resistance. Designed to seamlessly expand your gaming library on Switch, Switch OLED, and Lite, it ensures reliable, high-performance storage backed by a lifetime limited warranty.

Specifications

Colour	Yellow
Special feature	Temperature Proof, Water Proof, X Ray Proof
Read speed	100 Megabytes Per Second
Item weight	0.2 Ounces
Warranty type	No Warranty
Write speed	90
Hardware interface	microSDXC
Secure digital association speed class	Class 10
Product dimensions	15L x 11W millimetres
Manufacturer	Sandisk
UPC	619659173869
Global Trade Identification Number	00619659173869, 06196591738690
Item model number	SDSQXAO-256G-GNCZN
Standing screen display size	1.5 Centimetres
RAM Size	256 GB
Graphics Card Interface	Integrated
Power Source	Hand-operated
Hardware Platform	Nintendo Switch
Operating System	Windows
Are Batteries Included	No
Lithium Battery Energy Content	2 Kilowatt Hours
Lithium Battery Packaging	Batteries packed with equipment
Lithium Battery Weight	4.54 Grams
Number Of Lithium Ion Cells	5
Number of Lithium Metal Cells	5
Item Weight	5.66 g
Guaranteed software updates until	unknown

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