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Cisco High-Speed ​​WAN Interface Card - Expansion module - HWIC - RS-232, RS-530, X.21, V.35, RS-449 ... (HWIC1T) extension modu
Cisco High-Speed ​​WAN Interface Card - Expansion module - HWIC - RS-232, RS-530, X.21, V.35, RS-449 ... (HWIC1T) expansion module - Cabling: Network, Serial, maps HWIC (High-Speed ​​WAN Interface Card) can free up network module slots for other services.
