Check the listing for details. SONY BKM-21D SDI MULTI DECODER ADAPTOR BKM21D. Condition: Open box. Listed at 254.99 USD. SONY BKM-21D SDI MULTI DECODER ADAPTOR Original Sealedfor Sony Professional Monitorsref. BKM21D The BKM-21D is a 4:2:2 and 4fsc (NTSC/PAL) digital and analog (NTSC/PAL) decoder and input expander for the BVM Evergreen series monitors. Digital decoder processing is 10-bit. 3 Digital inputs (with active loop through) and 3 Analog inputs (with passive loop) can be accepted. \ Additional Detailed Information: Product Highlights10-bit digital decoder processingAccepts 3 Digital inputs (with active loop through)Accepts 3 Analog inputs (with passive loop) Sony BKM21D SDI & NTSC/PAL Decoder Board For BVM-14G1E/G5E/F1E/F5E/ 20G1E/F1E and D20F1E/24E1WE/32E1WE SDI (4:4:2 OR 4fsc NTSC/PAL) Input/Output Composite (NTSC/PAL) Input/OutputApplicable for the following Sony Colour Video Monitor.BVM-14F1EBVM-14F5EBVM-14G1EBVM-14G5EBVM-20F1EBVM-20G1EBVM-D20F1EBVM-D24E1WEBVM-D32E1WE