IBM 5515-UTP H05515-004i Interphase PCI ATM adapter card (part number 5515-UTP, assembly H05515-004i) provides legacy ATM connectivity for enterprise systems requiring asynchronous transfer mode networking. The card features PCI interface compatibility with IBM enterprise servers and workstations from the mid-1990s through early 2000s era. UTP (unshielded twisted pair) connectivity supports standard ATM cabling infrastructure. Typical deployment scenarios include legacy financial trading systems, telecom infrastructure, and scientific computing clusters that depend on ATM backbone architecture. Card is refurbished, tested, and guaranteed fully functional. Available via quote from G5 Network Group.