I like being able to switch between keyboards for my PC easily. Replacing the bulky dual USB-A cable from the Corsair K65 with a USB-C port helps make this possible. Crawling under my desk is no longer needed to switch keyboards!

USB-C Port Assembly

The USB-C port assembly used is made of three parts:

• 2 mm 5-pin JST socket cable (sourced from DigiKey).
• USB-C port breakout PCB (sourced from DigiKey).
• 3D printed PCB retainer housing (you can download the .stl here).

I printed the PCB retainer housing with 100% infill. Run the connector cable wires through the retainer housing. Solder the wires to the PCB (pinout below). Use hot glue to seat the USB-C port breakout PCB into the retainer.

Old Bulky Cable

This keyboard comes with a dual USB-A cable. The second connector is used to supply additional power to the keyboard for its RGB lighting in the event that a single USB-A port wasn't able to supply enough power on its own. This makes for a bulky cable! My PC is perfectly capable of delivering enough power from a single port (I suspect this is the case for most modern PCs).

Making the Modification

I'm going to assume you know how to disassemble (and reassemble) your keyboard. The USB-C port assembly plugs into the 2 mm 5-pin JST plug that you removed the original cable from. Leave the 4-pin equivalent disconnected (it was used by the second USB-A cable). We'll also ignore the ring connector that appears to be shorted to GND. The PCB retainer housing slots into the cable retaining feature the original cable occupied. Job done!