Maktar microSD Express UHS-II 512GB

Tested and working.
Formatted on Switch2.

Maktar
microSD Express Card 512GB
[Compatible with Nintendo Switch 2]
Read Speed/Write Speed Max 800/600MB/sec
U3 V30 A2 UHS-II

Max Read Speed: 800MB/s,
Write Speed: 600MB/s High-Speed Data Transfer

Compatible with Nintendo Switch 2
Supports a Smooth Gaming Experience
Interface: PCIe Gen3 x1 (Compliant with SD7.1 Specification)

Backward Compatible with UHS-I
(When used with UHS-I compatible devices, actual speeds will adhere to UHS-I standards)