: ; Product name: M. 2 B-key WWAN 4G network card slot to SD 4.0 interface adapter board Specification: M. 2 B-key WWAN interface, size 30x42mm, adapter board supports SD 4.0 UHS-II Applicable equipment: SD card Product usage: it can convert the 4G network card slot that is not used in the notebook into an SD interface, this product is for transfer Chip specification: Genesys GL3232S USB 3.2 GEN1 to SD 4.0 Memory Card Reader Controller USB specification compliance Comply with Universal Serial Bus 3. 1 Specification ( USB 3.1 GEN1) Comply with Universal Serial Bus Specification . 2.0 (USB 2.0) Comply with USB Mass Storage Class Specification . 1.0 Support USB Mass Storage Class Bulk Only Transport (BOT) Support 1 device address and up to 3 endpoints: Control (0) / Bulk Data Read In (1) / Bulk Data Write Out (2) Support 5 Gbps SuperSpeed, 480 Mbps high speed, and 12 Mbps transfer rates Integrated USB building blocks SuperSpeed US B/ USB 2.0 transceiver macro (UTM), Serial Interface Engine (SIE), and embedded P ower O n R (POR) Embedded high speed 8051 Mini controller High efficien hardware DMA engine improves data transfer performance between USB and flash card interfaces Support Se cure Digital TM v1.0 / v1.1 / v2.0/ SDHC / SDXC c apacity up to 2TB) Support Secure Digital TM v 3.0 UHS I (Ultra High Speed): SDR12/SDR25/SDR50/DDR50/SDR104 Support Secure Digital TM v 4.0 UHS II: Full Duplex Mode and Half Duplex Mode Support DDR200 speed mode to enhance the UHS-I performance Support EXTREME® 160 MB/s Micro-sd UHS-I CARD Support MultiMediaCard TM (MMC) Colour:Black Material:plastic Package Contents: 1 x Converter Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.