You gave no information about the device you need a driver for so open Device Manager, find and double-click the network device, click the Details tab, select "hardware id" and give me the hardware id string that begins with "PCI\VEN", (1st./top line of text only).
Or you can search on the manufacturers website:
http://www.fmworld.net/product/hard/...hod/index.html
The NB series is a Japanese market only pc/notebook.