pd4dNote 1: The PD4D does not support MP, therefore static multicast routing needs to be confured on any switches to allow the multicast to flow to the PD4D Note 2: The PD4D sends periodic gratuitous ARP, this may disturb unicast IPIsolating Pd atoms has been shown to be crucial for the desn of a Pd-based electrocatalyst toward 2e– oxygen reduction reaction (ORR). However, there are limited