Supporting apparatus of a server cabinet and server cabinet using the same

A server cabinet comprising:

• a server rack;
• and
• a supporting apparatus for supporting the server rack, comprising:
• an extension arm comprising two opposite ends, wherein one end of the extension arm is movably connected to a lower side of the server rack;
• and
• a supporting unit connected to the other end of the extension arm;
• wherein the extension arm is movable between a retracted position, where the extension arm is accommodated in the lower side of the server rack, and a deployed position, where the extension arm extends out of the server rack and resists against a supporting surface through the supporting unit;
• wherein the supporting apparatus further comprises a latching unit comprising:
• an elastic sheet accommodated in the extension arm;
• and
• a protrusion protruding from the elastic sheet;
• a resisting portion extending toward the supporting unit from the elastic sheet;
• wherein the extension arm defines a first installation slot and comprises a blocking portion in the installation slot, the elastic sheet is accommodated in the first installation slot, the blocking portion is positioned below the resisting portion and configured to prevent the resisting portion falling out of the first installation slot, when the extension arm moves to the deployed position, the extension arm extends out of the server rack and the protrusion protrudes out of the first installation slot under force of the elastic sheet, the protrusion resists against the server rack and keeps the extension arm at the deployed position.