HP V30 512GB Micro SD Card

Speed: Read Speed:40MB/S-120MB/S. Write Speed: 15MB/S-35MB/S. Speed is depend on host device, interface, usage conditions and the type of your device.Data from Sandisk offical website. Feature: Support System: Windows 10, 8, 7, Vista, XP / Mac OS 10.4 or higher / Linux 2.6.31 or higher. Support Device: Computer/Laptop/TV/TV Box/Car Media Player/Android Smartphone(With OTG Function) and etc. About use: Plug and play (no software needed) Interface type: USB3.0/USB2.0(Compatible). Body:Metal Boday.Waterproof,Dustproof,Shockproof, 60°Rotary design, protect the port.with leather lanyard . Weight:Approximately26g. Size: 57mm (L) x 16.5mm (W) x 10mm (H)About Capacity: 32GB Approximately 28 GB-30 GB. 64GB Approximately 56 GB-60 GB. 128GB Approximately 115 GB-119 GB . 256GB Approximately 230GB-238 GB . 512GB Approximately 476 GB . Vendors are using decimal arithmetic: 1MB = 1000KB, 1G = 1000MB calculated, but the operating system is using binary arithmetic: 1MB = 1024KB, 1GB = 1024MB. So there are some differences