This product is either discontinued or we cannot get that from suppliers.
Lenovo 4XA0E97775 Dp To Hdmi 2.0b Adapter, Black, Connector DisplayPort - male, Second Connector HDMI - female, 4K support, Designed For ThinkCentre M710s; M710t; M715q; M715q (2nd Gen); M720q; M720s; M720t; M75q-1; M75s-1; M810z; M820z; M910s; M910t; M910x; M920q; M920s; M920t; M920x; M920z.
The 4X90R61023 Adapter is an active DisplayPort to HDMI 2.0B adapter that connects DisplayPort enabled notebooks or desktops to HDMI enabled displays such as monitors and projectors.