Aprelco UL Listed AC / DC Adapter Compatible with 3Com P48121000A090G 7900-000-021 Switching Power Supply Cord Cable PS Wall Home Charger Input: 100 - 240 VAC 50/60Hz Worldwide Voltage Use Mains PSU

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.