i have 2 hard drives scsi 2 and i want o install to scsi 2 port on csppc.how to install the hardware and what software i need?
Simple - don't!
If you attach SCSI-2 devices (50-pin, 10MHz) to the CSPPC SCSI bus, the entire SCSI chain will be slowed down to 10MB/s maximum speed.
If you keep only SCSI Ultra-Wide (68-pin, 20MHz) and Scsi Ultra (50 pin, 20MHz) devices on the CSPPC bus, it will operate up to 40MB/s (when addressing Ultra-Wide devices) and 20MB/s (when addressing ultra devices). Yes, you can have these connected at the same time without losing speed.
Do yourself a favour - don't cripple your CSPPC scsi bus, just buy a cheap zorro adapter and use that for any SCSI-2 devices you need to access.
Also
HOW TO INSTALL SCSI 2 HARD DRIVE TO CSPPC??
Please stop shouting all the time. :-)
Regards
Rich