02-06-2015 04:46 AM - edited 02-06-2015 04:47 AM
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Looking at the list of supported WiFi / WiMax adapters on page 88 of the G510 hardware maintenance manual, the Intel Centrino® Advanced-N 6235 is not officially supported by the machine.
As for upgrading the memory, this system supports up to 16GB DDR3L-1600MHz SODIMM. If you're planning to max it out, it'll be best to get a 16GB (8GBx2) dual channel kit for best performance.