Description: Both USB keyboard and USB flash drive can be used. Mobile hard drives require an external USB power supply. Simultaneously usable with mobile phones, tablets, MID, UM computers, and e-books with Micro USB OTG interface for OTG transfer functions. This adapter cable features a separate Micro USB interface, allowing connection of a charger and Micro USB data cable to the USB device in use. Mobile tablets with OTG function can connect to USB keyboards, mice, card readers, U-disks, and mobile hard drives via this adapter. When connecting mobile hard drives and USB flash drives, the disk format must be FAT32. Applicable to Android and other systems without system limitations. Specification: New and high quality Interface: Micro USB Applicable Model: Universal Number of taps: single head Model: wire Cable length: 20cm Color: Black Package includes: 1 pc Note: Please refer to the dimensions. Small measurement errors are permissible within the normal range. As different computers display colors differently, thank you for your understanding; the actual product color may vary slightly from the image.