Supporting assemblies for installable components

1. A supporting assembly comprising:

a supporting member;

a latch bar supportable by the supporting member, the latch bar comprising a first end and a second end, wherein the latch bar is to extend longitudinally along, and parallel to, a slot for an installable component of a computing device;

a coupling arm provided at the first end of the latch bar, wherein the coupling arm is to engage with a portion of the installable component, in response to the installable component being inserted into the slot; and

a control knob couplable with the second end of the latch bar, wherein the control knob is rotatable, and is to control rotation of the latch bar.

2. The supporting assembly as claimed in claim 1 , wherein the control knob is moveable between a first position and a second position, and wherein the control knob, when moving to the first position from the second position, is to enable the coupling arm to move away from a base of the supporting member, to enable extraction of the installable component from the slot.

3. The supporting assembly as claimed in claim 2 , wherein, on the installable component being inserted into the slot, the control knob, when in the second position, is to restrict the movement of the coupling arm being in engagement with the portion of the installable component.

4. The supporting assembly as claimed in claim 1 , wherein the supporting member is a longitudinally extending member enclosing a portion of the latch bar.

5. The supporting assembly as claimed in claim 1 , wherein the coupling arm extends radially from the first end of the latch bar.

6. The supporting assembly as claimed in claim 1 , wherein a rotational axis of the control knob extends along the rotational axis of the latch bar and is radially offset from the rotational axis of the latch bar.

7. An electronic circuit board assembly comprising:

an expansion slot, wherein the expansion slot is to receive an installable component;

a latch bar supported by a supporting member, the latch bar comprising a first end and a second end, wherein the latch bar is adjacent to and extends longitudinally along the expansion slot;

a coupling arm provided at the first end of the latch bar, wherein the coupling arm is to engage with a portion of the installable component in response to the installable component being inserted into the expansion slot; and

a control knob couplable with the second end of the latch bar, wherein the control knob is rotatable and is to engage with, and control rotation of, the latch bar to permit insertion and extraction of the installable component from the expansion slot.

8. The electronic circuit board as claimed in claim 7 , wherein the expansion slot is one of a Peripheral Component Interconnect (PCI) slot, a Peripheral Component Interconnect Express (PCIe) slot, and an Accelerated Graphics Port (AGP) slot.

9. The electronic circuit board as claimed in claim 7 , wherein the control knob is to rotate between a first position and a second position, wherein the control knob, when in the first position, is to allow the coupling arm to rotate to enable extraction of the installable component from the expansion slot.

10. The electronic circuit board as claimed in claim 9 , wherein, when moved to the second position, the control knob is to restrict the movement of the coupling arm, when the coupling arm is in engagement with the portion of the installable component.

11. The electronic circuit board as claimed in claim 7 , wherein the coupling arm extends orthogonally from the latch bar.

12. A computing device comprising:

an electronic circuit board;

an expansion slot integrated onto the electronic circuit board, wherein the expansion slot is to receive an installable component;

a latch bar longitudinally extending along the expansion slot, the latch bar comprising a first end and a second end, with the latch bar being supported by a supporting member adjacent to the expansion slot;

a coupling arm extending from the first end of the latch bar, wherein the coupling arm is to engage with a portion of the installable component, in response to the installable component being inserted into the expansion slot; and

a control knob couplable with the second end of the latch bar, wherein the control knob is rotatable between a first position and a second position and comprises an adaptation to engage with and control rotation of the latch bar to permit insertion and extraction of the installable component from the expansion slot.

13. The computing device as claimed in claim 12 , wherein the control knob is to:

permit rotation of the latch bar to enable extraction of the installable component from the expansion slot when the control knob is in the first position; and

prevent rotation of the latch bar and to secure the installable component into the expansion slot when the control knob is in the second position.

14. The computing device as claimed in claim 12 , wherein the adaptation comprises a pawl element, wherein the pawl element is coupled to the control knob.

15. The computing device as claimed in claim 14 , wherein the latch bar comprises protrusions provided radially at the second end of the latch bar, wherein the protrusions are to engage with the pawl element when the control knob is in the second position.