null
General Interface Systems

General Interface Systems GIS AB 3-Way 25-Pin DB25 Data Transfer Switch Serial

(No reviews yet) Write a Review
SKU:
29993
MPN:
AB
Condition:
Used
Availability:
Usually ships within 1-2 business days.
Weight:
5.00 LBS
Shipping:
Calculated at Checkout
  • General Interface Systems GIS AB 3-way data transfer switch — front panel view showing three pushbutton selectors labeled 1, 2, 3 and GIS logo
  • General Interface Systems GIS AB data transfer switch — rear panel showing five DB25 25-pin connectors
  • General Interface Systems Inc. GIS logo close-up on front panel of AB data transfer switch
$30.00
Was: $60.00
Current Stock: 1

Sold Out

Description

General Interface Systems GIS AB 3-Way 25-Pin DB25 Data Transfer Switch Serial Parallel

Manual three-position data transfer switch for routing serial and parallel data signals between multiple devices. Routes one common port to three selectable outputs via pushbutton selection.

Specifications & What's Included

  • Brand: General Interface Systems
  • Model: AB Data Transfer Switch
  • Connector Type: DB25 (25-pin)
  • Ports: 5 total (1 common + 3 selectable + 1 additional)
  • Switch Positions: A / B / C
  • Interface: RS-232 / Serial / Parallel
  • Switching Method: Manual pushbutton
  • Form Factor: Desktop
  • Unit only — no cables included

Applications

Used in industrial and telecommunications environments to multiplex connections between computers, terminals, modems, and peripheral devices. Commonly deployed in legacy RS-232 serial networks and parallel data systems where switching between multiple devices was required without cable reconfiguration. Found in manufacturing control systems, test equipment setups, and data communications installations through the 1990s and 2000s.

Condition: Used
This General Interface Systems GIS AB 3-Way DB25 Data Transfer Switch has been inspected and appears to be in good condition. The enclosure shows typical wear for its age — light scuffs and minor soiling on the beige plastic shell, with a small spot of surface rust visible near the logo on the top panel. The three front pushbutton selectors and all five rear DB25 25-pin connectors appear intact. No cables are included. Please view our photo set and contact us if you have any questions.
View AllClose

Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
View AllClose

Additional Information

Brand:
General Interface Systems
Model:
AB Data Transfer Switch
Type:
Manual AB Data Transfer Switch
SKU:
29993
Number of Ports:
5 (1 common + 3 selectable + 1 additional)
Connector Type:
DB25 (25-Pin)
Switch Positions:
3 (A / B / C)
Interface:
RS-232 / Parallel / Serial
Form Factor:
Desktop
Switching Method:
Manual pushbutton
Condition:
Used – Inspected and in Good Condition
Seller Notes:
Unit only — no cables included. Switch only.
Country/Region of Manufacture:
United States
Condition Notes:
General Interface Systems GIS AB 3-Way DB25 Data Transfer Switch. Inspected, good used condition. Light scuffs on shell, minor surface rust spot near logo. All DB25 ports and pushbuttons intact. No cables included.
View AllClose

Related Products

Related Products

BAFO 8720-25S Data Transfer Switch — front panel with rotary AB selector knob and model label BAFO 8720-25S rear panel showing three DB25 25-pin female connectors: one Input-Output and two peripheral ports labeled A and B
Add to Cart
Quick view

BAFO 8720-25S 2-Way Data Transfer Switch 25-Pin DB25 Serial AB Switch Box

BAFO

$18.00
Was: $40.00
BAFO 8720-25S 2-Way Data Transfer Switch 25-Pin DB25 Serial AB Switch BoxThe BAFO 8720-25S is a manual 2-way AB data transfer switch that allows a single host device to share two peripheral devices —...
39515
SKU:
39515
Availability:
Usually ships within 1–2 business days.
Weight:
2.00 LBS
Brand:
BAFO
Model:
8720-25S
MPN:
8720-25S
Type:
Manual AB Data Transfer Switch
SKU:
39515
Number of Ports:
3 (1 Input-Output, 2 Peripheral — A and B)
Connector Type:
DB25 Female (25-Pin)
Interface:
RS-232 / DB25 Serial / Parallel
Switch Configuration:
2-Way AB (1 host to 2 devices)
Switch Type:
Manual Rotary
Number of Positions:
2 (A and B)
Form Factor:
Desktop Box
Condition:
Used – Pulled from Working Environment
Seller Notes:
Unit only; no cables included.
Country/Region of Manufacture:
Taiwan
Condition Notes:
BAFO 8720-25S 2-Way DB25 Data Transfer Switch. Inspected, good used condition. Pulled from a working environment where it was in active use. Light surface wear; rotary knob and connectors intact. See photos.
General Interface Systems GIS 4-Port Data Switch – front panel view showing four rotary selector knobs and GIS logo General Interface Systems GIS 4-Port Data Switch – rear panel showing four DB25 female connectors in two rows
Add to Cart
Quick view

General Interface Systems GIS 4-Port Data Switch DB25 Parallel Serial Selector

General Interface Systems, INC

$20.00
Was: $40.00
General Interface Systems GIS 4-Port Data Switch DB25 Parallel Serial SelectorThis is a General Interface Systems, Inc. (GIS) 4-Port Manual Data Switch, a compact desktop device used to route data...
30029
SKU:
30029
Availability:
Usually ships within 1-2 business days.
Weight:
4.00 LBS
Brand:
General Interface Systems
Model:
4-Port Data Switch
MPN:
unknown
Type:
Manual Data Switch / Port Selector
SKU:
30029
Number of Ports:
4
Connector Type:
DB25 (25-pin)
Switch Type:
Manual / Rotary
Form Factor:
Desktop
Interface:
RS-232 / Parallel
Condition:
Used – Pulled from Working Environment
Seller Notes:
Unit only; no cables included
Country/Region of Manufacture:
United States
Condition Notes:
General Interface Systems GIS 4-Port Data Switch. Inspected, in good used condition. Pulled from a working environment. Light yellowing and minor surface wear; knobs and DB25 connectors appear intact. No cables included.
Unbranded 2-way DB25 manual AB data transfer switch — front panel view showing rotary selector knob with A/B positions and DATA SWITCH label Unbranded 2-way DB25 data transfer switch — rear/side view showing three DB25 25-pin female connectors labeled I/O, A, and B
Add to Cart
Quick view

2-Way DB25 Data Transfer Switch Manual Rotary AB Switch 25-Pin Parallel Port

Generic

$15.00
Was: $30.00
2-Way DB25 Data Transfer Switch Manual Rotary AB Switch 25-Pin Parallel PortManual AB switch for routing data between two devices and one host or peripheral. Uses a rotary knob to select between Port...
29377
SKU:
29377
Availability:
Usually ships within 1-2 business days.
Weight:
3.00 LBS
Brand:
Unbranded
Model:
2-Way DB25 Data Transfer Switch
Type:
Manual Rotary AB Data Transfer Switch
Number of Ports:
3 x DB25 (1 I/O, 2 Device — Port A and Port B)
Connector Type:
DB25 Female (25-Pin)
Switch Positions:
2-Way (A/B)
Switch Mechanism:
Manual Rotary Knob
Interface:
Parallel / RS-232 / Serial
Form Factor:
Desktop / Tabletop Box
Power Required:
None — passive mechanical switch
Compatible With:
Parallel printers, serial devices, RS-232 equipment
SKU:
29377
Condition:
Used – Inspected and Tested
Seller Notes:
Tested and confirmed in working order. No accessories included.
Condition Notes:
This unbranded 2-way DB25 manual AB data transfer switch has been tested and is in working order. Rotary knob and all three DB25 connectors are functional. Light cosmetic wear on enclosure. Please contact us with any questions.
PC Concepts 2-Way AB Data Switch — front view showing rotary A/B selector knob and PC Concepts logo PC Concepts 2-Way AB Data Switch — top/rear view showing three DB25 25-pin female connectors labeled Input-Output, A, and B
Add to Cart
Quick view

PC Concepts 2-Way AB Data Switch DB25 25-Pin Serial Parallel Printer Switch Box

PC Concepts

$12.00
Was: $25.00
PC Concepts 2-Way AB Data Switch DB25 25-Pin Serial Parallel Printer Switch BoxManual AB data switch for routing serial and parallel device signals to two separate destinations. Features a rotary...
29987
SKU:
29987
Availability:
Usually ships within 1-2 business days.
Weight:
6.00 LBS
Brand:
PC Concepts
Model:
2-Way AB Data Switch
MPN:
2-Way AB Data Switch
Type:
Manual AB Data Switch
SKU:
29987
Condition:
Used – Inspected and Tested
Seller Notes:
Cables not included. Tested and in working order.
Number of Ports:
3 (1 Input/Output + 2 A/B)
Connector Type:
DB25 (25-Pin Female)
Interface Type:
DB25 Serial / Parallel
Switch Type:
Manual Rotary AB Switch
Number of Positions:
2 (A and B)
Form Factor:
Desktop
Power Requirements:
No power required (passive)
Compatible With:
Serial and parallel devices with DB25 connectors
Country/Region of Manufacture:
Taiwan
Condition Notes:
This PC Concepts 2-Way AB Data Switch has been tested and is in working order. Shows cosmetic wear typical of previous use. Rotary switch and all DB25 ports are intact. No cables included.