Cisco WAN Network Interface Module – Serial adapter – RS-232/449/530/V.35/X.21 x 2 – refurbished – for P/N: ISR4321-PM20, ISR4331-PM20, ISR4351-PM20, ISR4431-PM20, ISR4461-K9-CAP, ISR4461-PM20
£115.27
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Refurbished 2-Port Serial WAN Interface card