lenovo thinkcentre pci slot - Lenovo ThinkCentre M72e/ i5-3470 (3597-CTO) cash slot 888

Máy tính đồng bộ Lenovo ThinkCentre M72e SFF: Chipset H61, CPU Intel core i5 2400(6M Cache,3.1GHz up to 3.40 GHz), Ram 2GB (2x1GB) DDR3, ổ cứng 250GB.

I have just bought Lenovo H50 90C1 desktop system. It has one PCI Express slot, unmarked (does not say 3.0). There is no name on the motherboard other than Lenovo, it is an internal cheap motherboard without any specs.

Whenever I try to switch on my Lenovo thinkpad laptop which shows this PCI LAN : IBA CL slot 00FE v0106 what should I do - Lenovo ThinkPad A275