An I/O device includes a host interface that may be configured to receive and process a plurality of transaction packets sent by a number of processing units, with each processing unit corresponding to a respective root complex. The host interface includes an error handling unit having error logic implemented in hardware that may be configured to determine whether each transaction packet has an error and to store information corresponding to any detected errors within a storage. More particularly, the error handling unit may perform the error detection and capture of the error information as the transaction packets are received, or in real time, while the error handling unit may include firmware that may subsequently process the information corresponding to the detected errors.