My Lenovo E73 MT sleeper build I've been using and upgrading for the past few months while pc prices and GPU's have skyrocketed. Originally was a basic Lenovo E73 Before I upgraded
Original for Lenovo ThinkCentre E73 motherboard IH81M 00KT254 00KT255 00KT257 03T7161 motherboard 100% tested OK fully work - AliExpress
Lenovo FRU 00KT266 Motherboard IH81M Socket 1150 System Board
00KT254 Lenovo System Board (Motherboard) Socket LGA 1150 for ThinkCentre E73 Tower (Refurbished)
PC Desktop Motherboard for ThinkCentre E73 IH81M H81 03T7161 00KT254 00KT255 System Board Fully Tested : Amazon.co.uk: Home & Kitchen