Adonit Nest USB-C to Card Reader Adapter, Supports Secure Digital V30 UHS-I, Supports both SD/Micro SD Card Reader, Grey - Notice These two USB-C output ports cannot be used for data transfer and charging at the same time. Compatible with USB-C hosts supporting USB digital audio transmission. Not compatible with hosts that only support analog audio mode. When connecting to a USB-C mobile phone without a PD (Power Delivery) function, audio and charging are alternative functions, with charging taking priority. For USB-C mobile phones without data role swap support, the audio function may pause when plugging in the power adapter. This product does not support Quick Charge (QC). When using P2.0 original earphones with a HUAWEI P20 device, ensure normal audio function by connecting the power adapter before plugging in the headset. - Specification Dimensions: 45mm * 36mm * 11mm Weight: 16.5g Material: Aluminium + Plastic Input/Output Connector: USB-C Male x 1、SD card slot x 1、Micro SD card slot x 1 Operating Temperature: 0℃ to + 45℃ Operating Humidity: 10% to 90% RH(no condensation) Storage Temperature: - 10℃ to + 70℃ Storage Humidity: 10% to 90% RH(no condensation) Power Source: Bus Power SD card: Support Secure Digital V30 UHS-I (Ultra High Speed)：SDR 12 (12.5 Mbyte/s)/ SDR 25(25 Mbyte/s)/ SDR 50(50 Mbyte/s)/ DDR 50(50 Mbyte/s)/ SDR 104(104 Mbyte/s)