Integral 128GB SDXC Memory Card - UHS-1 U3 CL10 V30

SDXC (Secure Digital eXtended Capacity) supports capacities from 32GB up to 2TB and uses the exFAT file system. SDHC (Secure Digital High Capacity) supports capacities from 4GB to 32GB and uses FAT32. Standard SD cards are typically 2GB or less. This 128GB card is SDXC and requires an SDXC compatible device.

V30 refers to Video Speed Class 10, guaranteeing a minimum sequential write speed of 30 MB/s, suitable for 4K video recording. U3 refers to UHS Speed Class 3, guaranteeing a minimum sequential write speed of 30 MB/s, beneficial for burst photography and higher-resolution video.

This is an SDXC card. If your camera only supports SDHC or standard SD cards, it may not be compatible or may operate at a much slower speed. Check your camera's specifications for SDXC compatibility.

The best way to format is through the device you will use the card in most (e.g., your camera). Insert the card, go to the device's menu, and find the format option. Alternatively, you can format it on a computer using the built-in disk management tools, ensuring you select the exFAT file system for SDXC cards.

The Integral High Speed 128GB SDXC Memory Card comes with a 5-year warranty from the date of purchase.

The 180 MB/s is the maximum potential read speed under ideal conditions. Actual transfer speeds will depend on the card reader, the USB port on your computer, and the storage device you are transferring to/from. The write speed is a more critical factor for recording.

Ensure the card is fully inserted and the device is powered on. Try cleaning the card's contacts with a dry, lint-free cloth. Check if the device supports SDXC cards. Try the card in a different compatible device.

Verify that your computer's card reader supports UHS-I U3 speeds. Ensure you are using a USB 3.0 or higher port. Close other applications that might be using system resources during transfer.

Format the card using the device you are using it with (note: this will erase all data). Ensure the device's firmware is up to date. Check if the file size exceeds the capacity of a single file system limit, although unlikely with SDXC for standard video.

Check if the write protection switch on the side of the card is in the 'lock' position. If it is, slide it to the other position. If the switch is not the issue, the card may need to be formatted.