Power-loss protection

1. A power-loss protection apparatus comprising:

a power source; and

a power-loss detection circuit to detect an indication of power loss in a client device, and to alert an M.2 electronic card for indicating the power loss is about to occur,

the power-loss protection apparatus being separate from the M.2 electronic card that includes a volatile storage and a non-volatile storage, and wherein the alert is to trigger a transfer of data from the volatile storage to the non-volatile storage using power from the power source; and

wherein the power-loss detection circuit is to alert the M.2 electronic card by outputting a signal to a link interface reset input of the M.2 electronic card.

2. The power-loss protection apparatus of claim 1 , wherein the client device includes an electronic device available for single-user use at a given time.

3. The power-loss protection apparatus of claim 1 , wherein the link interface reset input of the M.2 electronic card includes a PERST# input according to a Peripheral Component Interconnect Express (PCIe) standard.

4. The power-loss protection apparatus of claim 1 , wherein the power-loss detection circuit is to alert the M.2 electronic card by outputting a signal to an input of the M.2 electronic card, the input when activated indicating that a power supply voltage is at an operational level.

5. The power-loss protection apparatus of claim 1 , further comprising a support substrate on which the power source and the power-loss detection circuit are mounted.

6. The power-loss protection apparatus of claim 1 , further comprising circuitry to couple the power source to the M.2 electronic card in response to the power loss, wherein the circuitry is without a switching matrix.

7. The power-loss protection apparatus of claim 1 , wherein the power source includes a capacitor.

8. The power-loss protection apparatus of claim 1 , wherein the power source includes a battery.

9. A power-loss protection apparatus comprising:

a temporary power source; and

a power-loss detection circuit to detect an indication of power loss in a client device, and to output, in response to the indication, a signal to an input of an electronic card for indicating to the electronic card that the power loss is about to occur,

the power-loss protection apparatus being separate from the electronic card that includes a volatile storage and a non-volatile storage, and wherein the signal is to trigger a transfer of data from the volatile storage to the non-volatile storage, and

wherein the input of the electronic card is a link interface reset input to the electronic card or an input to place the electronic card into a lower power state.

10. The power-loss protection apparatus of claim 9 , wherein the input of the electronic card is a Peripheral Component interconnect Express (PCIe) reset input of the electronic card.

11. The power-loss protection apparatus of claim 9 , wherein the input of the electronic card is a Serial Advanced Technology Attachment (SATA) input for placing the electronic card into the lower power state.

12. The power-loss protection apparatus of claim 9 , wherein the indication of power loss in the client device includes deactivation of a power-good signal.

13. A method of power-loss protection, comprising:

detecting, by a power-loss detection circuit, power loss in a client device;

in response to the detecting of the power loss, outputting, by the power-loss detection circuit, a signal to a control input of an electronic card for indicating to the electronic card that the power loss is about to occur, the power-loss protection circuit being separate from the electronic card that includes a volatile storage and a non-volatile storage, wherein the control input of the electronic card is a link interface reset input to the electronic card or an input to place the electronic card into a lower power state; and

triggering a transfer of data from the volatile storage to the non-volatile storage in response to the signal, using power of a power source.

14. The method of claim 13 , wherein the electronic card is an M.2 electronic card.

15. The power-loss protection apparatus of claim 1 , wherein the power-loss detection circuit alerts the M.2 electronic card that power loss is about to occur upon detecting a power voltage in the client device dropping below a threshold voltage.

16. The power-loss protection apparatus of claim 1 , further comprising a connection circuit to connect the power source to the M.2 electronic card in response to the power loss, the connection circuit comprising a diode between the power source and the M.2 electronic card.

17. The power-loss protection apparatus of claim 1 , wherein the power-loss detection circuit comprises an AND gate to receive link interface reset signal and a power-good signal from the client device.

18. The power-loss protection apparatus of claim 1 , wherein the power-loss detection circuit comprises a comparator to receive sense voltage signal from the client device and a reference voltage signal.

19. The power-loss protection apparatus of claim 1 , further comprising a voltage regulator between the power source and the M.2 electronic card.

20. A power-loss protection apparatus comprising:

a power source; and

a power-loss detection circuit to detect an indication of power loss in a client device, and to alert an M.2 electronic card for indicating the power loss is about to occur,

the power-loss protection apparatus being separate from the M.2 electronic card that includes a volatile storage and a non-volatile storage, and wherein the alert is to trigger a transfer of data from the volatile storage to the non-volatile storage using power from the power source; and

wherein the power-loss detection circuit is to alert the M.2 electronic card by outputting a signal to a control input of the M.2 electronic card.