Hikvision C1 Series 256GB Micro SD (TF) Memory Card / Standard Scalable Storage Option / Compatible with MicroSDHC, MicroSDXC, MicroSDHC UHS-I and MicroSDXC UHS-I / Read : Up to 92MB/s / Write : Up to 20MB/s / HS-TF-C1-256GB / HS-TF-C1-256GB