The DC Coupler DR-E6C allows for the use of external power supplies, including A/C mains wall power, for extended shooting periods, as well as for the high framerates and resolutions, such as 8k/59.94p RAW recording. The Canon CA-946 Power Adapter is required for the 9-Volt power draw necessary for the EOS R5 C’s high power consumption modes. This coupler is also backwards compatible with the EOS R5 and R6 mirrorless cameras.