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i have an old Lenovo G505 that isn’t working and my current laptop is the Lenovo z50 i was wondering if it’s possible to replace the charging port on my Z50 with the one on the G505 since they both use the same connector and both use the same charger thanks.

Although they both use the same connector and charger, the cable which connects the port to the mainboard may differ. I had a quick look at the pictures of both mainboards and it looks like the connector used is different. On the Z50, the connector is soldered flat to the board where as the G505 port is upright. I recommend finding a new charging port on e-bay or a part seller site which is made for your Z50. There is also the risk of the pin layout being different and you could damage the mainboard of your Z50.