Here is 3 drivers compatible with USB\VID_0403&PID_6001.
This is Device ID of USB High Speed Serial Converter.
Category:Controllers
Manufacturer:Espada
Hardware:MP232R2
Software type:Driver
File Size:7.54Mb (7902187 bytes)
Released:10 Jan 2013
System:Windows VistaWindows Vista 64-bitWindows XPWindows XP 64-bitWindows Server 2003Windows Server 2003 64-bitWindows MELinuxWindows CEWindows 7Windows 7 64-bitWindows Server 2008Windows Server 2008 64-bit
Description:Driver for Espada MP232R2Download Espada MP232R2 Driver
Category:Notebooks
Manufacturer:HP
Hardware:OmniBook xe3L-gf
Software name:Pavilion Notebook N54XX (GF) and HP Omnibook XE3 (GF) ? USB to Serial Adapter Driver
Version:1.0
File Size:608.28Kb (622881 bytes)
Released:10 Jul 2002
System:Windows 98
Description:Pavilion Notebook N54XX (GF) and HP Omnibook XE3 (GF) ? USB to Serial Adapter Driver for HP OmniBook xe3L-gf

Type: Driver
This package contains a driver for Windows 98SE. This package will (by default) load the driver into the C:HPDRIVERSW98UPDATEUSB2SerYGi subdirectory, and open a read me file containing installation information.
Download OmniBook xe3L-gf Pavilion Notebook N54XX (GF) and HP Omnibook XE3 (GF) ? USB to Serial Adapter Driver 1.0
Category:PC
Manufacturer:Compaq
Hardware:Evo D510 e-pc
Software name:USB-to-Serial Converter Driver
Version:1.0.2146.0 C
File Size:669.17Kb (685232 bytes)
Released:21 Jan 2005
System:Windows 2000Windows XP
Description:USB-to-Serial Converter Driver for Compaq Evo D510 e-pc

Type: Driver - Keyboard, Mouse and Input Devices
This package contains the drivers to configure the USB-to-Serial Converter for the listed desktop models and operating systems.
Download Compaq Evo D510 e-pc USB-to-Serial Converter Driver 1.0.2146.0 C