https://www.cisco.com/c/en/us/support/docs/field-notices/700/fn70082.html
Field Notice: FN - 70082 - Nexus 3000 Series Platforms Might Observe an eUSB Failure - Software...
An issue has been discovered on Cisco Nexus 3000 Series switches that use 2Gb or 4Gb boot flash (products listed in Table 1) which might prevent a successful...