http://202.39.219.60:8000/KVM_Switch/PDF/RP_KVM871U_DT.pdf
http://202.39.219.60:8000/KVM_Switch/PDF/RP_MVS02H_DT.pdf
http://202.39.219.60:8000/KVM_Switch/PDF/RP-KVM004-DS.pdf
http://202.39.219.60:8000/KVM_Switch/PDF/RP-KVM004-ML.pdf