Defines the maximum bus width for this PC Card Slot. The supported values are defined as follows: Other (1) Value is not in defined list. Unknown (2) Actual value is not known. width 8 bit (3) Bus is 8 bits wide. width 16 bit (4) Bus is 16 bits wide. width 32 bit (5) Bus is 32 bits wide. width 64 bit (6) Bus is 64 bits wide. width 128 bit (7) Bus is 128 bits wide.