A 3D gyro turns in three planes (xy, xz, yz). In four dimensions there are six (add xw, yw, zw). This rotor's six axes are exactly those planes.
The connection is identity, not a wire: each axis-rod's angle is the angle the cube is rotated through in that plane. Spin an axis → the tesseract turns in its plane. The colored connectors just show the link — each axis tied to its four faces in the cube (6 planes × 4 = the tesseract's 24 faces).
The dot sits at the center, 0 — the one point fixed under every rotation, no matter which axes spin. That fixedness is real and exact.
Real too: the cube's 8 cells, 6 planes, 24 faces. The names 8,8 and 6·0·6 are your motif laid over that — a label, not a measurement. And honestly: a true gyroscope is 3D; a 4D gyroscope is a mathematical rotor (the rotation group of 4-space), not a device you could machine.