x540-10g-1t-x8 (1 port) & x540-10g-2t-x8 (2 ports) use pcie 2.1 x8. Will x540-10g-1t-x8 give 10gb speed using pcie 2.1 x4 in an x8 slot? Thanks!

Hi, normally the x540-10g-1t-x8 could give 10gb speed using pcie 2.1 x4 in an x8 slot.