Adaptec AHA-3940U Getting Started Guide - Page 1

1 Getting Started This Installation Guide tells you how to install and configure AHA®-3940U/3940UW/3940UWD PCI-to-UltraSCSI host adapters. These host adapters have two SCSI channels which operate like two independent host adapters. AHA-3940U/3940UW/ 3940UWD host adapters are designed for computers with PCI slots. PCI is a local bus interface that enables high-speed data transfer. The computer in which you install the host adapter must be PCI 2.0 or PCI 2.1-compliant, and the motherboard BIOS must support PCI-to-PCI Bridges (PPB). If you're not sure whether the motherboard BIOS supports PCI-to-PCI Bridges, ask the motherboard or computer manufacturer. The AHA-3940U supports up to seven 8-bit SCSI devices on each 8-bit SCSI channel. The AHA-3940UW/3940UWD supports up to fifteen 16-bit or 8-bit SCSI devices on each 16-bit Wide SCSI channel; up to seven of these can be 8-bit devices. Installation procedures are the same for all three host adapter models. 2 Board Layout The following diagrams and table show the major AHA-3940U, AHA-3940UW, and AHA-3940UWD components. AHA-3940U J6 J1 J2 J3 J4 J5 1 AAAAAAAAAAAAAAAAAAPPCAAAAAAaruHiAAArrntAAAArtAAAeN-SAAAn3uAAApt9mAAAeD4AAAcbAAA0aeAAANtUerAAAu::/AAA3mAAA519AAA11b4AAA1/eAAA010rAAAU4:4AAA/04WAAA9-AAA960AAA/43AAA059AAA,6AAA4R8AAA0e-AAAU0vAAA0AAA.WAAABAAADEAAAAAACIAAAnNAAAsAAAtDAAAaAAAlalAAAtaAAAetAAA:i1oAAAAAA1nAAA/G1AAAAAA8uAAA/i9AAAdAAA6eAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA