Aprelco UL Listed 6V AC/DC Adapter For Fitness Quest Balance 5K 5200 5K 6100 5K 5100 NB9000 NB 9000 Bike Vital Fitness MB 251 MB 351 Exercise Bike, PROFORM EXPF-8004, Reebok RB 345 RB 310 Bike

PwrON is specializing in the production of high quality and economical replacement power supply for laptop, tablet, phones and other electrical appliances.
Products manufactured with the highest quality materials and include multiple smart features safeguarding against IV - incorrect voltage, SC - short circuit, IO - internal overheating . Chargers are certificated with CE FCC etc.

If you don't know whether the machine can use this adapter, you can view your original adapter's output parameters (voltage, current) whether conform to. if lost the original adapter, you can check the parameters at the bottom of the computer, or your illustrations of the machines.