Unused, Excellent Condition Legacy KSW-SZ3 3-Line High-Reliability Vertical Manual Switch

This is the 3-Circuit Bidirectional All-Pin Switch KSW-SZ3 manufactured by Kansai Electric Wire Co., Ltd. (KANSAI).
It is an unused, beautiful item.
This device is used to manually switch between three connection destinations for one piece of equipment, for signals of the RS-232C (Serial) standard, which was used with older computers and peripherals.
3-Circuit Support: Switch between three connection destinations (A, B, C) using the dial on the front.
All-Pin Switching: This model switches all D-Sub 25-pin signal lines straight through.
Bidirectional Support: You can use three devices with one PC, or conversely, share one device with three PCs.
Please refer to the photo of the back of the box for details.

There may be demand from factories and research institutions that maintain legacy device equipment.
Furthermore, the original box, manual, cables, and warranty are all included, and the main unit is in very clean condition. A complete set with this many accessories is rare, so it may be valuable to collectors or those looking for spare parts.

- Brand: Kansai Electric Co., Ltd.
- Model Name: KSW-SZ3
- Type: 3-Channel Selector
- Number of Ports: 3 Ports
- Accessories: Includes cables

I have never used it myself, and I only opened the outer box for photography this time, but judging by the condition of the equipment, it appears to be unused.
The included cables are unopened.

[ATTENTION!!] Please confirm the following.
This item was purchased as new-old stock about 20 years ago.
At the time, I bought it thinking it might be useful as I was constantly increasing the number of PCs, but it remained stored in the warehouse.
Since it is unused, the operation has not been confirmed.
Due to age, the rubber feet bases have yellowed.
The weight including the box is 1.75kg, which is quite heavy.
The outer box and user's manual have some damage.
Please purchase only if you understand and agree to the above.
Immediate purchase is OK.

Thank you for looking.