Yes, they are the same, some sites that offer the neons for PC's have a 4 pin molex connector attached to them to plug into a spare from your power supply, most of the car neons use a plug that plugs into the cig. lighter in your car, I've seen 3 different styles, all 12VDC, one may use a inverter box with leads to plug into the lighter, then the tubes plug into the box, some have the inverter built into the tube's casing with lighter plug, some have the inverter built into the lighter plug, just watch out for the ones with the inverter built into the lighter plug, I seen on a site where a guy got this style and cut the lighter plug off not realizing the inverter was mounted in it, no matter which style you can make them all work!