IBM 86624RY Maintenance Manual - Page 217
Input/output connectors and expansion, slots, PCI Expansion Slots, Parallel Connector
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Input/output connectors and expansion slots The following illustration shows the expansion slots and the input/output connectors (ports) on the rear of the server. 1 PCI Expansion Slots: The server has five peripheral component interconnect (PCI) expansion slots. Four of the PCI slots support hot-plug PCI adapters. The remaining, non-hot-plug PCI slot supports only a short adapter. Many adapters provide bus-master capabilities, which enable the adapters to perform operations without interrupting the system microprocessors. 2 ISA Expansion Slot: The server has one industry standard architecture (ISA) expansion slot. Many adapters provide bus-master capabilities, which enable the adapters to perform operations without interrupting the system microprocessors. 3 Parallel Connector: A signal cable for a parallel device, such as a printer, connects here. 4 Serial A Connector: A serial signal cable for a modem or other serial device connects to this 9-pin serial connector. Serial port A can be shared by the Netfinity Advanced System Management Processor and the operating system. See "Devices and I/O ports" on page 24 for port assignment information. If you are using a 25-pin signal cable, you need a 9-pin-to-25-pin adapter cable. 5 Attention Lights for Hot-Plug PCI Slots: Each hot-plug PCI slot has an Attention light that is visible from the rear of the server. An Attention light flashes approximately once per second when it Netfinity 5500 M20 - Type 8662 209