Unofficial OEM lowend model. Cards are using x8 PCI-E 3.0 lines Vlask's card:Made by Bitland for Lenovo. Bitland Radeon R7 350Bitland Radeon R7 350 Bitland Radeon R7 350Bitland Radeon R7 350 Bitland GPUZBitland GPUZ R7 350 GPGPUR7 350 GPGPU