| 摘要 |
An information processing apparatus of the type which can install hard disk drives (30) that serve as a master or a slave in response to whether a master/slave control pin (11,21) is set at a first voltage level for designating a hard disk drive (30) as a master or at a second voltage level for designating a hard disk drive (30) as a slave, comprises: (a) a first connector (10), for connecting a hard disk drive (30), that comprises more than one connector pin (11,21) including a first master/slave control pin (11), the first master/slave control pin (11) being maintained at the first voltage level; (b) a second connector (20), for connecting a hard disk drive (30), that comprises more than one connector pin (21,22) including a second master/slave control pin (21); (c) detection means (12) for detecting whether or not a hard disk drive (30) is connected to the first connector (10); and (d) master/slave designation means for maintaining the second master/slave control pin (21) at the second voltage level when a hard disk drive (30) is connected to the first connector (10), and maintaining the second master/slave control pin (21) at the first voltage level when no hard disk drive (30) is connected to the first connector (10). <IMAGE> |
