HP 87H3518 4-port T1 cable assembly designed for enterprise connectivity applications requiring T1 line termination. Part number 87H3518 provides four independent T1 ports in a single consolidated connector interface, typical of HP storage and networking equipment from the mid-2000s forward. Supports standard T1 transmission rates of 1.544 Mbps per port with aggregate throughput of 6.176 Mbps across all four channels. Compatible with HP StorageWorks and ProCurve infrastructure requiring dedicated T1 WAN or remote connectivity. Commonly deployed in legacy enterprise networks for branch office interconnection, MPLS circuits, or serial data communication links. Form factor integrates directly into applicable HP equipment without requiring external adapters. Refurbished units retain original connector integrity and shielding characteristics.Typical applications include wide-area network failover, legacy telecom integration, and multi-site data replication in enterprises not yet migrated to broadband-based WAN solutions. Each port maintains electrical isolation per T1 standard specifications.This unit has been tested and guaranteed. Available via quote from G5 Network Group.