You can get the latest information about product compatability, supported systems and devices, warranties and licenses, and service and support from this list of websites.
https://support.lenovo.com/us/en/documents/LNVO-CENTER
Lenovo BladeCenter Product and Support site
http://shop.lenovo.com/us/en/systems/servers/blades/bladecenter/
http://shop.lenovo.com/us/en/systems/servers/blades/flex-system/
http://www.lenovo.com/us/en/serverproven/