What Are TF Cards ?

What is a TF card for a Bluetooth speaker? tf card slot meaning Secure Digital, officially abbreviated as SD, is a proprietary, non-volatile, flash memory card format the SD Association developed for use in tf slot on bluetooth speaker Besides, because of its compatibility with several devices, a TransFlash card is mostly considered a means of storage expansion or secondary

tf slot meaning Select the slot you want to format and your done But It says TF Card there, so that means that memory card was inserted correctly