Features: Brand new and high quality Allows to connect RS-485 device to your computer via USB port. Stable and reliable Prolific PL2303. Real USB 2.0 specification compliant for faster and steadier data communication. TIA/EIA RS-485 standard compliant. Data transfer rate up to 10Mb/s. Transmit distance reach up to 1219m. (The longer distance, the lower rate.) Supports multiple terminals up to 32 RS-485 devices. Supports automatic handshake mode. Supports remote wake up and power management. Auto sense serial signal rate. Zero delay automatic transmit. 600W surge and 15KV static electricity protection. Standard USB type A male and RS-485 serial 9 pin male connector with terminal board. Total length: 80mm. Ideal connections to Modem, PDA, GPS, Bar Code, Digitizer, Digital Camera, Label printer & ISDN terminal adapter, etc. Supports Windows 2000/XP/Vista/7/8/Server 2003/2008, RedHat 7.3/8.0/9.0, Kernel 2.4.10 or above & Mac OS 8 or above. Note: The USB side must be connected to PC or Mac. Other USB devices like digital camera, scanner and printer is not allowed. Specifications: Host interface: USB 2.0 Device interface: RS485 Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x USB 2.0 to RS-485 Adapter Cable 1 x 6pin Terminal Board 1 x Driver CD