2-18 General DescriptionPCI Riser SlotsThe mother board has two PCI riser slots. Riser B provides the following features: Bus speed up to 133 MHz 184 pin, 5 volt keyed, 64-bit expansion slot connector Support for a 1-slot PCI riser card Support for both full length and low profile PCI cardsRiser C provides the following features: Bus speed up to 66MHz 184 pin, 5 volt keyed, 64-bit expansion slot connector Support for a 1-slot PCI riser card Support for only low profile PCI cardsVideoThe mother board uses an ATI RADEON 7000 PCI graphics accelerator with 16 MB of videoSDRAM. The embedded SVGA video subsystem supports: Resolutions up to 1600 x 1200 under 2D and 1024 x 768 under 3D CRT and LCD monitors up to 100 Hz vertical refresh rateThe mother board supports disabling of the onboard video through the BIOS setup menu or when aplug in video card is installed in any of the PCI slots.SCSI ControllerThe SCSI version of the server board includes an embedded Adaptec AIC-7902 controller providingdual Ultra320 Low Voltage Differential (LVD) SCSI channels.The SCSI bus is terminated on the server board with active terminators that cannot be disabled. Theonboard device must always be at one end of the bus. The device at the other end of the cable mustalso be terminated. LVD devices generally do not have termination built-in and need to have atermination source provided. Non-LVDs devices generally are terminated through a jumper orresistor pack on the device itself.
