Display stand and display stand system

A display stand for suspending a display, the display stand being operable to change an orientation of the display between a horizontally supported state and a vertically supported state without detaching and attaching the display, the display stand comprising:

• a stand unit having a plurality of posts and a mounting mechanism;
• and
• a mounting bracket mounted on a back surface of the display,
• wherein the mounting bracket includes three fixing members as first, second, and third fixing members each extending from the back surface of the display,
• wherein the mounting mechanism includes a mounting plate, the mounting plate forming at least a part of a transverse plate that connects between the plurality of posts, the mounting plate including a straight rail part having a straight slot and a bent rail part having a bent slot, the bent slot being bent at a substantially right angle, and
• wherein of the three fixing members fixed to the mounting bracket, the first fixing member engages with the straight rail part and is linearly movable when the display rotates, and the second fixing member and the third fixing member each engage with the bent rail part and are movable along straight portions of the bent rail part when the display rotates.