Compatible USB device , no need for immediate use.
3pcs USB 3.0 end with SD/TF card added. Supports SD , SDXC ( up to 2TB) , SDHC , Micro SDXC , MicroSDHC card.
Blue LED indicator light indicates power status.
The communication speed can be set up to 5Gbps at the same time.
Personal machine design , combination iMac production , small skill , mobile convenience.