The PSMAC and PSMDC are 100W power supplies for the WDM modules.
They are dual voltage power supplies providing 48 VDC and 5.3 VDC to their hosts. The supplies are designed to be used as single supplies or redundantly for added reliability. The PSMAC and PSMDC have integrated temperature sensing and a communications microprocessor which constantly monitors temperature and status information and reports it to the host.
One supply is included when purchasing the host module and redundant or spare supplies can be ordered separately.