A2091 SCSI Controller for Commodore Amiga 2000, 2000HD, 2500, 3000, 4000
Commodore Amiga A2091
Copyright 1991 Commodore Amiga, Inc.
The A2091 is a full-length Zorro-II DMA SCSI hard drive controller for the Commodore Amiga 2000 or 4000 Computer.
Has the Latest v7.0 ROMs installed, Fully populated with 2mb RAM and Updated rev.8 SCSI Chip.
14MHz MOD has been applied with jumper to disable if needed. See blue pictures with test results.
The 14MHz MOD almost doubles the speed of the throughput on most 68000,010,020 and 030 Systems!
As far as I know SpeedGeek from Amibay is the original developer of this technique. You can read all about here:
The A2091 comes with 2mb RAM Installed, upgraded v7.0 ROMs,
updated rev.8 SCSI Chip, 14MHz FAST MOD, 50pin SCSI Cable, Molex Power Cable,
copy of Manual and Latest v1.30 Install Disk.
All Tested in Excellent Working Condition and Guaranteed Against DOA!