... reader frequency:13.56mhz 2.reader interface:USB,RS232,etc 3.High performance and competitive price Descriptions USB mifare reader for ... reader frequency:13.56mhz 2.RFID reader interface:USB,RS232 3.High performance and competitive price.OverviewRF-30 Series RFID Reader ... CODE2,Tag-it,HF-I etc. RFID CPU CardsReading Distance3-10cm(related to the RFID Cards)PowerExternal Power/ USB/ POEPictures