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RLL Hard Disk Controller with floppy controller onboard. Tested with today's leading ST-506 type hard disks.
Small Image of ACB-2372C
DownloadsDocumentationTechnical Specifications

Note: Only drivers that are not included or embedded within a supported operating system are listed below. To see a complete list of supported operating systems see the Product Specifications

Select your operating system or software below

Bios Updates and Other Downloadable Files

Bios Updates and Other Downloads


Microsoft DOS

obsolete product info (html 69 kb)
Product Documentation
Install Guide for the ACB 2372C (PDF 247 KB)

The ACB-2372C Features

IBM hardware compatible
IBM software compatible
17 sector translation
Supports two 2,7 run-length (RLL) qualified ST412/506 drives
Can support more than 1024 cylinders under DOS
Highest PC AT 2,7 RLL performance
Non-interleaved operation
Fast Step Rate
Most accurate 2,7 RLL data separator
Optional on-board Adaptec ACB-BIOS
ACB-BIOS low-level primary format
ACB-BIOS defaults and help messages
ACB-BIOS ability to add grown defects, save and protect all defect lists
ACB-BIOS sector-level mapping
ACB-BIOS data verification using worst-case data patterns
ACB-BIOS autoconfiguration of any 2,7 RLL drive, not in PC AT system BIOS
PC XT height board
High component integration using Adaptec ICs
Use of surface mount technology
Support of two IBM PC AT-type floppy disk drives
Analog floppy data separator
The on-board floppy controller can be disabled to run in systems with a motherboard floppy controller

Hardware and Software System Requirements

IBM PC AT-compatible computer without floppy disk controller
PC or MS-DOS Version 3.0 or higher, system and supplemental program diskettes
A "set-up" diskette that allows the PC AT-compatible computer's configuration RAM to be set up
Adaptec ACB-237XC hard disk and floppy disk controller
A 2,7 RLL qualified Winchester disk drive
5 1/4" or 3 1/2" floppy disk drive
20-and 34-pin flat or twisted ribbon cables for hard disk
34-pin twisted ribbon cable for floppy disk

Board Dimensions

3.9" x 13.0" x 0.75"

Power Consumption

+5V - 1.2Amp (typical)
-5V Power - Not used
+12V Power - 40mA
-12V Power - Not Used

Operating Characteristics

0° to 55°C (32° to 131°F)
0% to 95% Non-condensing humidity
Altitude - feet: Sea Level to 10,000

Storage Characteristics

-40° to 75°C (-8° to 167°F)
10% to 95% Non-condensing humidity
Altitude - feet: Sea Level to 20,000

MTBF (mean time between failures, Bellcore)

20,000 at 55°C