FIG. 1 is a front, bottom and right side perspective view of portable information terminal unit, showing my new design in a fully opened state;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a front, bottom and right side perspective view thereof with a cover in a closed state; and,

FIG. 9 is a front, bottom and right side perspective view thereof with a cover in a partially opened state, with an input pen removed, and with an antenna extracted.

Any portions of the article not shown are not considered to be a part of the claimed design.