Product Link Ready Machines have existing mounting locations for the PL151/201 and PL321. If the PL151/201 or
PL321 are installed, the existing Product Link system must be removed prior to installing the PL522/523. Mount the
PL522/523. If the PL522/523 does not fit in the space provided for the PL151/201, Refer to Special Instruction,
REHS2365, "Mounting the Product Link ECM on Legacy Machines".