IEC Cables.  Varying lengths are available depending on your requirements as well as a locking and non-locking version.  The locking version is only available in 6' lengths.

These IEC cables are required for our as well as the of PSUs.

Locking power cords  guard against accidental disconnection of all power supplies
with an IEC inlet. No exchange or modification of the IEC inlet or IEC inlet filter system is needed. Easy retrofit for all electronic equipment and devices.