A high count of discarded packets is typically indicative of a duplex mismatch issue, where there is a configuration inconsistency between how the installed network adapter and the corresponding switch port manage data transmission. This would result in data collision and packet loss. A speed mismatch can also cause performance problems, but it doesn't typically increase the rate of discarded packets. Damaged cables may lead to packet loss, but this is less likely in a new installation where the adapter settings are a common concern. Incorrectly assigned network configurations could interfere with connectivity but generally do not lead directly to increased packet loss.