It helps you to exchange TF SD flash drive easier. it convert SD card to microSD card, Can be read/write SD card on microSD device. It is hard to replace TF card which the slot is placed the in back side of the PC. To use this product,which can be replaced TF card drive easier. Width:30mm/1.2" x Length:308mm/12" x Cable Length:235mm/9.25" Warranty period:6 mounths Smartphone devices not included
