Question: what is the tf card slot?
Answer: TF card, also known as T-Flash card, the full name: TransFLash, also known as: Micro SD, jointly developed by Motorola and SANDISK, was launched in 2004. It is a kind of ultra-small card (11*15*1MM), which is about 1x4 of SD card, which can be regarded as the smallest memory card so far.