Download the latest drivers, software, firmware, and diagnostics for your HP products from the official HP Support website. NI-VISA is an NI instrument driver that is an implementation of the Virtual Instrument Software Architecture (VISA) I/O standard. VISA is a standard for configuring, programming, and troubleshooting instrumentation systems comprising GPIB, VXI, PXI, serial (RS232/RS485), Ethernet/LXI, and/or USB interfaces.
USB to Serial converter HL-340: download 32 and 64 bit windows drivers (PID/VID 4348:5523)
Due to some reasons I had to run Windows XP on Virtualbox. After connected my classic pretty blue usb/serial cable converter, I found out that, as usual, Windows couldn’t recognize it. I wasted lot of time to find the appropriate working driver.
The converter is identified as
ID 4348:5523 WinChipHead USB->RS 232 adapter with Prolifec PL 2303 chipset
Factory website: http://wch-ic.com/
Chip page: http://wch-ic.com/product/usb/ch340.asp
I don’t have the time to investigate because lsusb reports that it mounts the chip PL2303 while Windows XP identifies it as USB-SERIAL CH340, but I guess this is due for some “cloning” reasons.
Anyway here are the most updated windows drivers I could find:
Gadget Serial Driver Download For Windows 7
32 bit: ch341_hl-340_windows_drivers_32bit
64 bit: usb_serial_converter_ch340_windows_x64_drivers
Usb To Serial Driver Download For Windows 7
Hope it helps.