This Polycom HDX Serial Cable is 5 feet long and part number 2457-10610-200. The
Polycom Serial Cable is a replacement or spare cable, and for RS-449 and RS-336.
Polycom 5' Serial Cable (2457-10610-200) for HDX video conferencing systems:
1) RS-449 and RS-366, 5' Serial Cable 2) HD-44M to 'Y' RS-499 DB-37M / RS-366 DB-25M