Here is 3 drivers compatible with USB\VID_1A86&PID_7523.
This is Device ID of USB-SERIAL CH340.
Category:Controllers
Manufacturer:Espada
Hardware:PAUB014
Software type:Driver
File Size:6.82Mb (7155674 bytes)
Released:14 Apr 2014
System:Windows VistaWindows Vista 64-bitWindows XPWindows XP 64-bitWindows Server 2003Windows Server 2003 64-bitWindows MEWindows 98 SEWindows 98Windows 7Windows 7 64-bitWindows Server 2008Windows Server 2008 64-bit
Description:Driver for Espada PAUB014Download Espada PAUB014 Driver
Category:Controllers
Manufacturer:ORIENT
Hardware:USS-102
Software type:Driver
File Size:205.2Kb (210125 bytes)
Released:30 Dec 2010
System:WindowsWindows 7
Description:Driver for ORIENT USS-102Download ORIENT USS-102 Driver
Category:USB
Manufacturer:Asound
Hardware:A-USB2RS232
Software type:Driver
File Size:183.55Kb (187959 bytes)
System:Windows VistaWindows XPWindows 2000Windows MEWindows 98Linux
Description:USB to RS232 cable driver for Windows 98/Me/2000/XP/Vista/LinuxDownload Asound A-USB2RS232 Driver