Question 1

Which is better, Viofo HK4 Hardwire Kit or OBDII to USB Power Cable?

Accepted Answer

Based on our testing, the Viofo HK4 Hardwire Kit scores higher overall at 9.1/10. The Viofo HK4 Hardwire Kit scored 9.1/10 and the OBDII to USB Power Cable scored 8.2/10 in our Best Dash Cam OBD Power Cables 2026 evaluation.

Question 2

Is the Viofo HK4 Hardwire Kit worth it over the OBDII to USB Power Cable?

Accepted Answer

The Viofo HK4 Hardwire Kit scores 9.1/10 while the OBDII to USB Power Cable scores 8.2/10. The Viofo HK4 Hardwire Kit is our "Best Overall" pick in the Best Dash Cam OBD Power Cables 2026 category.

Viofo HK4 Hardwire Kit vs OBDII to USB Power Cable: Which to Buy?