I don't have "extended" on windows 10... But I found something in Properties / Port Settings / Advanced. Here I have options for some Buffers.. Receive buffer from 1 to 14 and Transmit buffer from 1 to 16. No matter what I chose, not working. P.S. Please send me link for good ELM327 from A...

Thanks for reply Alfaeddy.
Driver is CH340, I can't install FTD driver.

How to change latency? I'm using Win 10.
I want to read the Alfa 147. But I can't even do a test in MES.

I have Chinese ELM 327 usb V1.5a and can't connect him to car in MES. I tried to remove R2 121 resistor (marked red on image) but nothing changed. Wires is for switch, ignore them. http://s8.postimg.org/ut7rp0y1h/IMG_20160211_210531.jpg http://s24.postimg.org/wz1afg2o5/IMG_20160211_211818_1455222116...