more board numbers 01HX645 01LV679 01HX672 getting to know t470 models and gpus T470p 20J6CTO1WW - i5-7300hq hd630 20J7S0CR08 - i7-7820hq 940mx with 01YR891 (looks like different form factor) 20J6S0FC00 - i7-7700hq 940mx with 01YR903 (similar form factor to 891) T470s 20JS0015US - i5-6300u hd520 20JS0004US - i7-6600u hd520 T470 20JM0009US - i7? (lenovo site displayed no cpu) hd520 20HD0068US - i5-7300u hd620 20HES6HC00 - i7-7600u hd620 20HES88S00 - i7-7600u hd620 20HES0MV00 - i5-7300u hd620 so there’s a reddit thread that says you can out lots of motherboards in the tp25 but it has been deleted, but i found an archive and found this: - you can charge the tp25 via the usb-c port 0.0 - they recommend not using 470p or 470s mobos - they say all t470 mobos work but most lack the nvidia 940mx which was a rare option … definitely makes sense to try charging the machine with usb-c :s :s :s