B&B Electronics USB-4751/4751L 用户手册

After receiving your USB-4751/4751L package, please inspect its con-
tents first. The package should contain the following items:
•  USB-4751/4751L Module
•  Shielded USB 2.0 Cable (1.8 m)
•  Companion CD-ROM (DLL driver included)
•  User Manual

The USB-4751/4751L Module harbors certain electronic components 
vulnerable to electrostatic discharge (ESD). ESD could easily damage 
the integrated circuits and certain components if preventive measures are 
not carefully paid attention to. Before removing the module from the 
antistatic plastic bag, you should take following precautions to ward off 
possible ESD damage:
•  Touch the metal part of your computer chassis with your hand to dis-

charge static electricity accumulated on your body. One can also use a 
grounding strap.

•  Make contact between the antistatic bag and ground before opening.

After taking out the module, you should first:
Inspect the module for any possible signs of external damage (loose or 
damaged components, etc.). If the module is visibly damaged, please 
notify our service department or our local sales representative immedi-
ately. Avoid using a damaged module with your system.

•  Avoid physical contact with materials that could hold static electricity 

such as plastic, vinyl and Styrofoam.