In an aspect of the present invention, a computer system includes a plurality of computer nodes and an inter-node connecting unit configured to connect the plurality of computer nodes. for 1 minute satisfy Formulae, ,, and ,Iwax \u22670. The top mount fixture is positioned within upper tooling and the top mount and top mount fixture are rotated in a first direction until a blocking stop on the upper tooling is engaged. Further specifically disclosed are a near-infrared absorbing filter wherein an adhesive layer containing the diimmonium compound is arranged on a transparent supporting body, and an optical filter using such a near-infrared absorbing filter. Left and right safety shields are fixed to and extend outwardly from the upper frame in opposite directions such that when the upper frame is positioned at the right position, the left safety shield covers the left gap, and such that when the upper frame is positioned at the left position, the right safety shield covers the right gap. The wick member has a downstream end in the outlet passage and a printer needle passage extends into the wick member from the downstream end thereof.