Description:  Two-way read the card， read one track Support for keyboard， serial， USB Bottom DIP switch can choose various functions Work voltage: DC5V+\/-10% Reader speed: 20-120cm\/s Reader standards: ANSI， IBM\/ ISO Working temperature: 0-45 degree centigrade\/ 32-104 Fahrenheit Relative humidity: 10%-90% Size: 180x50x45mm USB length: 155mm            Usage:  1.Keyboard wedge settings SW1-select the "Enter" ON: add "enter" OFF: don't add SW2-select"prefix(;)\/suffix(?)" ON: add "prefix\/suffix" OFF: don't add "prefix\/suffix"  2.Serial port settings Baud rate    SW1  SW2 1200            OFF   OFF 240              OFF    ON 4800            ON     OFF 9600            ON   ON SW3: prefix\/ suffix OFF(add)ON(without) SW4:"Enter" OFF(add)ON(without)  3.Defines the serial port DB9: 1:5v， 2:TXD， 3 RXD， 5:GND  Keyboard wedge: 6-pin male connection to the host PS2 keyboard port， 6 hole female port to connect a standard keyboard PS2 Serial port: D89 directly connected to the host PC serial or terminal USB interface: USB port， plug and play  Package included:  1 x Reader 1 x English manual