UMS-202-F / UMS-202-P 2 Port USB To RS-232 Manual Switch 
UMS-212  2 Port USB To RS-232 Auto & Manual Switch 
UMS-402-F / UMS-402-P  4 Port USB To RS-232 Manual Switch
UMS-412  4 Port USB To RS-232 Auto & Manual Switch 
Features  Specification 
  • UMS-202-F  2 Port USB2.0 to RS-232 Manual Switch w/FTDI Chipset
  • UMS-202-P  2 Port USB2.0 to RS-232 Manual Switch w/Prolific Chipset
  • UMS-402-F  4 Port USB2.0 to RS-232 Manual Switch w/FTDI Chipset
  • UMS-402-P  4 Port USB2.0 to RS-232 Manual Switch w/Prolific Chipset 
    UMS-212  2 Port USB2.0/3.0 to RS-232 Auto & Manual Switch
    UMS-412  4 Port USB2.0/3.0 to RS-232 Auto & Manual Switch
  • RS-232 Meets EIA/TIA-232F and CCITT V.28/V.24 spec.
  • UMS-202-F/402-F w/ FTDI chipset * 1
  • UMS-202-P/402-P w/ Prolific chipset * 1
  • UMS-212 w/ FTDI chipset * 2
  • UMS-412 w/ FTDI chipset * 4
  • UMS-212 / UMS-412 Auto Mode :First come first serve (w/Time out 5 Seconds)
  • Data Rate: Over 115200 bps
  • ESD Protection for RS-232 I/O' +-15KV
  • Power supply : Power free / DC5V USB Support
  • Easy to install , Plug & Play
  • DB9-M / RS-232  for DTE Mode
  • With LED indicate Selected PC
  • UMS-212/412 With TX Enable LED (RED) indicate data transfer
  • Compliant with USB1.1/2.0 /3.0/3.1 Spec.
  • For Win-98/se/me , Win-2000 ,Win-Vista /Win-NT up 5.0 Ver, Win-XP,Win-7 / 8 /10 / MAC OS. 8.6 up ,Linux 
  • Operating temperature : -0 TO 70 C
  • Dimension : UMS-202: 42 * 50 * 25 mm 38g 
                      UMS-402: 72 * 51 * 5 mm 70g

                      UMS-212: 42 * 50 * 25 mm 45g
                      UMS-412: 110 * 53 * 23 mm
    79g

  • DB9-M RS-232 (DTE Mode) Pin assignment

    Pin1 : DCD  <== IN

    Pin2 : RXD   <== IN

    Pin3  : TXD    ==>  OUT

    Pin4  : DTR    ==>  OUT

    Pin5  : GND

    Pin6  : DSR    <== IN

    Pin7  : RTS     ==>  OUT

    Pin8  : CTS     <== IN

    Pin9  : RI        <== IN