The world's smallest high-speed the light every USB/RS-232/485 converter! Industrial temperature! The Boshi USB232GH4 again to refresh the record of the world's smallest the light every USB/RS-232/RS-485 converter. Boshi latest generation products USB232GH4 smaller than USB232GH3 volume, operating temperature of -40 to +85 ° C, the communication rate up to 1M, but reduce the RS-422 port, driving into a PL2303 greatly reduced prices. With ultra-small form factor of the new generation the Boshi USB232GH4 high-speed optical isolation micro USB / serial converter, RS-232, RS-485 universal virtual local COM serial port (COM1-COM256) 2500V optical isolation, support 0 to 460.8 Kbps speed RS-232 communication and 0 ~ 1228.8Kbps, the RS-485 communication. No need to modify existing serial communication software. Patented product, Beware of imitations! Boshi USB / serial converter USB and RS-232/RS-485 serial devices to communicate with each other a protocol conversion device (USB protocol - serial communication protocol). RS-232/RS-485 serial port device sends the information to the designated or RS-232/RS-485 serial port device sends information between communication host (USB) and RS-232/RS-485 serial devices, communication host to specify the communication host after its transfer easily and correctly. Boshi USB232GH4 products provide a USB port, an isolated RS232 / RS485 serial port. The hardware installation type USB232GH4 USB / serial converter USB plugged into a computer's USB port can extraoral. The end is a DB-9 pin RS-232/485 serial ports of of Boshi USB232GH4 products Block, RS-232, RS-485 All pin. Exactly the same as the RS-232 port with DB-9-pin RS-232 port of the PC, 2,3,5 foot allocation. As RS-485, R +, R-refers to the farthest ends of the RS-485 bus to the terminal then resistance about 120 ohms default, located in the middle of a bus or below 115.2Kbps can not pick. Note RS-485 and RS-232 communication proposed to the grounding line (5 feet). RS-485 without jumper selectable. The RS-485 signal reference ground GND RS-232 is the same. DB-9-pin end of the pin allocation is as follows (with have terminal block): 1 2 3 4 5 6 7 8 9 RS-232 RXD TXD GND RS-485 A GND B terminal resistance R + R-USB232GH4 achieve a USB and serial (RS -232/485) between 2500V optical isolation. USB232GH4 RS-232 maximum communication speed of 460.8 Kbps RS-485 communication rate 1228.8Kbps. The Boshi USB232GH4 built 600W anti-lightning surge protector. Software installation USB232GH4 the drivers support Windows me/2000/XP/vista/7, LINUX, iMAC drive with Boshi USB232 driver software (PL2303). Follow the steps below to install the driver software: you start your computer, make sure the computer's USB port working. Directly run the corresponding versions of the Windows the SETUP driver installation software. If you want to change the COM port number, such as Windows XP, desktop à My Computer \ Properties à Hardware à Device Manager à the ports à communication port (find USB232GH4's) \ attribute à port settings à Advanced àCOM port number, the user can Change the COM port number. Can be forcibly changed to the COM port number has been occupied. Performance characteristics we can look at USB232GH4 real skill, the product has Boshi RS-485 zero delay automatic switch core technology, built-in minimum DB-9 plug a USB-UART interface chip, and an RS-232 interface chip , an RS-485 interface chip, DC / DC isolated power supply as well as 2500V optical isolation, etc., with 600W anti-lightning surge protection. Easy to use, the new USB232GH4 switch to a fixed USB cable, do not worry about the USB cable loose. If users still prefer the previous shape, Boshi continue to provide model USB232GH2 the product for the user to select functions and use the same, just bulky. - Direct extrapolation USB port, no external power supply! - The world's smallest the isolation USB/RS-232/485 converter! - Serial RS-232/RS-485 Universal! - Automatically identify the serial number, as a new COM port! - The software simply modify the serial number can be, without rewriting. - Driver software with Boshi USB232 converter. Appendix: the FTDI with ProLific USB-UART of the difference in the majority of cases, the user may not understand the difference between the two. But they are clearly different. Driver, WIN XP/VISTA/7 ProLific only provides drivers SETUP.EXE executable form. Can not say SETUP.EXE driver is not good, but there are still a number of occasions WINDOWS remind USB devices need to install the driver and asked to point out the location of the driver, when SETUP.EXE invalid, must run SETUP.EXE plug USB devices Caixing. WINDOWS can not automatically recognize USB devices, such as access Ethernet / USB server request must specify the location of the USB driver, while to run SETUP.EXE driving on the local computer is invalid, but because the USB device is not in the local on the remote. The FTDI driver INF configuration file with installation information instead of EXE executable file, and are common in a variety of under the WINDOWS version would not exist above SETUP.EXE. Boshi electrons through a large number of applications that: when used alone, FTDI ProLific USB-UART almost experience any difference, but when used with other products cascaded in the transmission and reception of data, in some cases feel ProLific obvious delay but the FTDI almost no delay. The FTDI's advantage of delay is much less than ProLific, although in most cases does not affect the user's use. The FTDI's significantly higher than the cost of ProLific, we think it should be. ProLific The advantage is that a very large amount of applications, and complete product specifications, occupied most of the market share.