Finally, I received this MINI 5 Gbps super speed USB3 micro SD/SDXC TF card reader after a period of 3 weeks waiting for the shipment to arrive. Not only this card reader looks and feels better than this one I have, but it costs a few cents less and does support R/W both cards concurrently. Now, I can mount to read/write both microSD and TF cards concurrently. Also, there is a built-in springy hardware mechanism to latch the inserted microSD card so that it won't accidentally fall off (get ejected out) of the microSD card slot. This one lacks all of these functions, unfortunately.
If you have some needs to get an inexpensive 5 Gps super speed USB3 card reader, I strongly recommend this MINI 5 Gbps super speed USB3 micro SD/SDXC TF card reader and NOT this one.
If you have some needs to get an inexpensive 5 Gps super speed USB3 card reader, I strongly recommend this MINI 5 Gbps super speed USB3 micro SD/SDXC TF card reader and NOT this one.