http://www.poweredgec.com/latest_poweredge-c.html#C6220%20BIOS
https://github.com/alces-software/knowledgebase/wiki/server-dell-cseries-c6220
https://www.dell.com/support/home/ru/ru/rubsdc/product-support/product/poweredge-c6220-2/drivers
http://www.poweredgec.com/latest_poweredge-c.html#C6220%20BIOS
https://github.com/alces-software/knowledgebase/wiki/server-dell-cseries-c6220
https://www.dell.com/support/home/ru/ru/rubsdc/product-support/product/poweredge-c6220-2/drivers