09-10-2017 02:47 PM
Is it possible to use the ThinkPad 90W AC Adapter with a Thinkpad P51 with Xeon 1505 and the M2200 GPU? Am a coder so I will rarely use the Nvidia GPU at all but don't want the CPU, memory, SSD etc. performance to be affected by a to small charger.
A related question, does the Nvidia GPU kick in automatically when using an external monitor or can that also be used with the Intel GPU? Only doing office work so no gaming, 3D modeling etc.
02-27-2018 08:07 AM
02-28-2018 05:02 AM
The THinkPad P51 uses a 170W adapter, nearly twice as many watts as the ThinkPad 90W AC Adapter puts out. It will only charge the P51 when it is powered down, or perhaps in lower power modes like deep sleep and hibernation. I would imagine this is a safety feature to prevent the adapter from burning out.