Metal box on driver side behind auto seat belt motor, what is it???

[MG200]

What is the metal box on driver side behind auto seat belt motor?? Its mounted at a angle with two screws. Its not the the ABS unit is it?? I am not sure if my car has ABS or not. Its on a 91 GSX with power windows, power doors, auto seat belts.

 

[MG200]

I am pretty sure its not the abs unit...so anyone know what it is?? Maybe a control for the auto belts?

 

[HighPsi92GST]

the abs computer should be on the passenger side right behind the seat belt motor. to tell if you have abs, the abs unit itself is a big grayish box in your engine bay right behind the air intake filter and in front of the battery with a bunch of brake lines going into it (easy way to tell if you have abs or not)