FOR SALE IS ONE (1) NEW USB TO SERIAL ADAPTER. BRAND NEW, THIS ADAPTER CONVERTER USES THE CH340 CHIP WHICH ALLOWS A CONNECTION BETWEEN YOUR CURRENT DAY USB AND THE OLDER RS-232 9pin SERIAL PORT. THIS PLUG IS USB MALE ON ONE END AND 9 pin SERIAL RS232 MALE ON THE OTHER END. THAT SERIAL PORT (output) MANY PRINTER AND ODD PERIPHERALS RAN ON YEARS AGO, SERIAL PORTS ARE NO LONGER AVAILABLE ON NEWER COMPUTERS. THIS CONVERTER WILL WORK FINE ON A PC, LAPTOP, CELL PHONE, CAMERA, MODEM, AND OTHER PERIPHERALS THIS ADAPTER FEATURES A MALE SERIAL ON ONE END AND A USB MALE ON THE OTHER. YOU WILL RECEIVE ONE (1) NEW USB TO SERIAL ADAPTER SHIPPED BY USPS FIRST CLASS MAIL..... Usb specification revision 1.1 2.0 compliant Support RS232 serial interface (both DB25 and DB9) Support over 1Mbps data transfer rate Support remote wake-up and power management Support Windows Me/2000/XP Suitable for PDA and modem BID AND BUY HERE IN IN ABSOLUTE CONFIDENCE SINCE I HAVE THOUSANDS OF POSITIVE FEEDBACK AND TEN+ YEARS EXPERIENCE. I SHIP WITHIN TWO DAYS OF RECEIPT OF PAYMENT, OFTEN THE NEXT DAY. $3.41 GREEN USPS FIRST CLASS SHIPPING USING RECYCLED PACKAGING MATERIALS AND ENVIRONMENTALLY FRIENDLY MATERIALS TO ANYWHERE USA. I DO NOT SHIP ANYWHERE ELSE. HAVE A GREAT DAY AND THANK YOU FOR STOPPING BY.......