Cable unit and server apparatus

A server apparatus comprising:

• a rack;
• a first electronic unit mounted at a front-face side of the rack;
• a second electronic unit mounted at a back-face side of the rack;
• and
• a cable unit that is disposed between the first electronic unit and the second electronic unit and that connects the first electronic unit with the second electronic unit;
• the cable unit including
• a first casing body including a first main wall facing a back face of the first electronic unit and a first peripheral side-wall formed at a peripheral edge of the first main wall, the first casing body forming an open shape that is open toward the back-face side of the rack,
• a second casing body including a second main wall facing a back face of the second electronic unit and a second peripheral side-wall formed at a peripheral edge of the second main wall, the second casing body forming an open shape that is open toward the front-face side of the rack, and the second casing body being fitted together with the first casing body at respective open portion sides of the second casing body and the first casing body such that the second casing body and the first casing body configure a box-shaped casing that expands and contracts along a direction in which the first main wall and the second main wall face each other,
• a first connector that is provided to the first main wall and that is connected to a back-face connector of the first electronic unit,
• a second connector that is provided to the second main wall and that is connected to a back-face connector of the second electronic unit, and
• a cable that is housed in the casing and that connects the first connector with the second connector.