YIOVVOM DB9 Breakout Connector To Wiring Terminal RS232 D-SUB Female And Male Serial Port Breakout Board Solder-Free Module With Case(2 Female Adapter 2 Male Adapter) Review

I'm sure the good people who use these things know where the upper hand is. But even a simple picture would be good for the rest of us. However, inserting wires is much easier than soldering.

I connected my wires first and used a voltmeter to figure out which hole connected to which wire. I used it to connect to an old set of Bose 321 gem speakers. Didn't want to cut into existing Bose cables. I connected each speaker in series with an impedance of 8 ohms. Works great with my Sony 5.1 receiver.

Making up a cable for a scanner programmer and needed a way to change the configuration until he programmed the scanner correctly and no soldering and desoldering connections wanted more. This setup worked great, not much larger than a standard DB25 and still fit in the laptop and scanner port. I will buy more if needed.

They fit perfectly for our use when connected to our laptop control panels. Possibility of quick connection and color coding of the connections without soldering. PERFECT!

Works but not durable at all, also the two different length threaded screws that come with the unit feel either too long or too short depending on usage. These items appear to be a factory defect and are being sold at full price, which I have seen many times at Revain.