A smaller, square, keyed connector first brought to popularity in the Macintosh PowerBook SCSI Connectors. Because SCSI conenctors (even the bastardized Macintosh 25-pin conenctor) are rather big, they don't work well on a laptop. Solution? Use a new connector!

Enter HDI-30. It stands for, obviously, Hight Density Interface, 30 leads. It gives you enough pins to to a (basic) SCSI interface in less then 1cm sqaure. Of course this requires a special adapter, and they ain't cheap -- $10 to $30 USD new, but you can get 'em for $5 used, especially if the person selling it doesn't know what it is.

And, for a bit of fun, a few of the more 'amusing' computer manufacturers have, in the past, produced keyboards with this interface (ostensibly to provide things like more controls and speakers). Oh, joy.

Log in or register to write something here or to contact authors.