Features: 100% d new and high quality Prolific PL-2303HX controller, excellent compaility Full compliance with USB 1.1 2.0 scification; Provides dual buffer for upstream and downstream data transfer Support RS232 serial interface ; Supports automatic handshake mode Supports wake-up and intelligent power management .Tiny Plug Ty, No more cable Suitable for PDA and modem, phone and GPS etc ; Support Win 98 or above, for MACOS X or above (Intel based), for Linuxt 7.3/8.0/10 and for Linux Kernal 2.4.31 and above Package Includes: 1 x USB 2.0 to RS232 9 Pin Adapter Scifications: Item: USB 2.0 to RS232 9 Pin Adapter Chip: PL2303 Ty: Male / Female Plug (Optional) Size:approx 5x3.6cm/1.97x1.42in Feature: Gold-plated Material: ABS+PC note: Due to the problems of ing effects and shooting angles, there will be certain tolerances in the product, please erstand. Please allow 0-2mm error due to manual measurme