(Adds details on penalty) By Karen Freifeld April 19 Reuters) – Seagate Technology Holdings PLC has agreed to pay a $300 million penalty in a settlement with U.S. authorities for shipping over $1.1 billion worth of hard disk drives to China's Huawei in violation of U.S. export control laws, the Department of Commerce said on Wednesday. Seagate sold the drives to Huawei between August 2020 and September 2021 despite an August 2020 rule that restricted sales of certain foreign items made with U.S. technology to the company. Huawei was placed on the Entity List, a U.S. trade blacklist, in 2019…