The Motorola HKKN4027 is the USB/CPS Programming Cable for Motorola RM, RDX, & CLP Series Business Two Way Radios. The Motorola HKKN4027 allows you to connect your Motorola RM, RDX, & CLP Series 2 Way Radio to your PC and change setting using the CPS Software.The HKKN4027 by Motorola has replaced the Motorola RKN4155 RDX 2-way radio programming cable and the HKKN4025 CLP 2 way radio programming cable.The Motorola HKKN4027 is the same part as the HKKN4027AThe HKKN4027 by Motorola works with all Motorola RM, RDX, & CLP Series Business Two Way Radios: RDV2020, RDV2080d,RDM2020, RDM2080d, RDV5100, RDU2020, RDU2080d, RDU4100 RDU4160d, RMU2040, RMU2080, RMU2080D, RMM2050, RMV2080, CLP1010, CLP1040, & CLP1060.The Motorola RDX, CLP, and RM Series two way radios can be programmed with the Business Radio Customer Programming Software which can be downloaded online. The software is located under the Resources Spotlight section at this link.The Motorola HKKN4027 is covered by a one year replacement warranty.