---
title: "S C S I S w i t c h"
url: https://digital-controls.com/scsisw.htm
---

# S C S I S w i t c h

**S C S I S w i t c h

 *Intelligent or Manual SCSI Switching for your SCSI 1, SCSI 2 or SCSI 3 Devices***

SCSI switches from Digital Controls make it possible to share one or two SCSI devices or strings of SCSI devices between two SCSI systems. Switching peripherals gives you low-cost backup and makes better use of expensive hardware such as tape drives.

 SCSI switches from Digital Controls are compatible with single-ended, differential and even wide SCSI devices. They can be used to redeploy SCSI 1, SCSI 2, or SCSI 3, 8 or 16 bit devices. Switches can be configured in either a 2x1 switch (add the right terminator) or 2x2 configurations.

| Ability to connect one or two SCSI hosts to one or two strings of SCSI peripherals Compact, solid-state design Ability to switch 8-bit Narrow or 16-bit Wide SCSI Supports SCSI 1, SCSI 2 or SCSI 3 Supports Differential or Single-ended SCSI Supports Fast SCSI Bi-Color LED indicators display switch position One-year warranty | **Additional Features of the Intelligent SCSI Switch**   Can be switched and locked via SCSI command from either host or via the serial port Prevents the SCSI bus from being switched (manually or by either host) if there has been any activity on either SCSI bus within a selectable number of seconds Performs self tests at power-up Supports SCSI RESERVE and RELEASE commands for systems with a shared SCSI bus **Specifications**  **Voltage** 100-120 or 220-240 VAC **Frequency** 50/60 Hz **Operating Temperature** 60o - 85o Fahrenheit 15o - 30o Celsuis **Electrical** 100-120 or 220-240 VAC **Humidity** 35%-45% **Dimensions** 11.5" x 8" x 2.5" **Weight**3 lbs **Connectors** Male 68 Pin (4) |
|---|---|

Model 90020, operated manually, has front panel LEDs which indicate the active position. Models 90030-S (single-ended) and 90030-D (differential) are intelligent switches that feature host-controlled switching and a lockout feature to prevent unauthorized use. Both intelligent models feature rear panel LEDs which display host activity, errors, locked position, and termination power.

Both switches are backed by a one-year warranty from Digital Controls.

**Order Information**

| **Part Number** | **Description** | **Price** |
|---|---|---|
| 90020 | SCSI Switch, 2x2, Manual | $799 |
| 90030-D | SCSI Switch, 2x2, Intelligent, Differential | $1,399 |
| 90030-S | SCSI Switch, 2x2, Intelligent, Single Ended | $1,299 |
| **Terminators** |  |  |
| 93978 | SCSI 68 Pin SCSI 3 Terminator, Differential |  |
| 93979 | SCSI 68 Pin SCSI 3 Terminator, Single Ended, Active |  |

© 1997 Digital Controls Corporation