The disclosed apparatus may include (1) a power distribution module that (A) distributes power to a network device that forwards traffic within a network and (B) includes a series of interlock blocks keyed to (I) enable power supply modules whose electrical ratings satisfy a certain threshold to be installed to the network device and (II) prevent other power supply modules whose electrical ratings do not satisfy the certain threshold from being installed to the network device and (2) at least one power supply module that (A) has an electrical rating that satisfies the certain threshold, (B) includes a flange that is keyed to fit between the interlock blocks of the power distribution module, and when installed to the network device by way of the power distribution module, (C) provides power to the network device that forwards traffic within the network. Various other apparatuses, systems, and methods are also disclosed.