GC Electronics 45-2221 Manual DB25 Female Port A/B/C/D Data Switch Bidirectional

GC Electronics 45-2221 Manual Data 4 Way DB25 Transfer Switch
DB25 Female input/Output
DB25 Female A
DB25 Female B
DB25 Female C
DB25 Female D
Rotary A/B/C/D Knob (Manual)
6" Wide
2-1/2" High
4-1/2" Deep with cable connectors attached
Rubber Feet
Open Box Display Unit from an Electronics Store, Never Sold, Never Used.