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The following devices are supported on the PCI 64-bit 66 MHz bus.

There are two PCI 64-bit 66 MHz PCI slots (slots 4 and 5) connected to the PCI 64-bit 66 MHz bus. These two 64-bit/66 MHz PCI slots support 3.3 V PCI cards and Universal PCI cards (support for 3.3 V or 5 V).

A universal compatible 32-bit 33 MHz accessory card can also be installed in PCI slots 3 or 4. However in this case the PCI 64-bit bus will only perform at 33 MHz.

PCI slots are explained in detail on page 31.

The Adaptec AIC-7892 Ultra 160 SCSI PCI controller is integrated on the system board. Data is transferred at 160 MB/s on 16-bit wide, Low Voltage Differential (LVD) bus.

If an Ultra-wide, or older SCSI device is connected on the SCSI bus, all Ultra 160 and Ultra 2 SCSI devices will automatically be switched to Ultra- wide SCSI. In this case, the LVD bus works as a single-ended bus, and data will only be transferred at 40 MB/s.

The controller is fitted with a 16-bit SCSI flat cable with five connectors, plus a SCSI termination device on the system board; so a maximum of five internal SCSI internal devices are supported. Additional devices can be added outside the PC Workstation by connecting directly to the rear panel SCSI connector. The external connector allows up to ten external devices to be connected. This gives a maximum of 15 (internal + external) devices that can be connected.

The last connector on the SCSI cable is connected to the external SCSI connector on the rear chassis. The connector before this is connected to the onboard SCSI terminator (located behind the processor).

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