for MSR50/20/20-1x
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JD572A HP 1-Port 10/100/1000 SIC A-MSR Module
JD572A HP 1-Port 10/100/1000 SIC A-MSR Module
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JD632A HP 2FXS+1FXO Voice Intfc SIC A-MSR Mod
JD632A HP 2FXS+1FXO Voice Intfc SIC A-MSR Mod