Methods and systems for forming slots in a print head substrate having a thickness defined by opposing first and second surfaces. The extension pipe has a through hole therein for insertion of the blow pipe. At least some of the uncommitted memory blocks are allocated for use by an option ROM or other BIOS data and a table is created identifying these uncommitted memory blocks. Related methods and apparatus are also described. The bottom of the smoke detection chamber has an opening therein with a shielding arrangement thereabout open to the chamber for a photodiode detector, the opening and shielding arrangement being located between the centerline of the smoke detection chamber and the mounting arrangement in the side wall of the chamber. In an embodiment, a platform includes a switch to control a network connection and an endpoint enforcement engine coupled with the switch.