20 Pcs 4.2 mm 6 Pin Header Male Pin 0.165" Graphics Card GPU PCI-E PCIe Power Connector Right Angle Through Hole PCB Video - AliExpress Lights & Lighting
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ISP-Adapter, 10-pin On 6-pin, for E.g. Atmel Avr , Arduino, Bascom, Usbasp, Icsp | eBay
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Amazon.com: Chanzon Round Pin Header Strip for Arduino Gpio 4 pin x 50pcs Male Headers Pins Straight Single Row Gold Plated Pitch 2.54mm 0.1 inch Breakaway for PCB Connector Raspberry pi Machine
3.3V/5.5V Stabilivolt IC Serial Module, USB to Serial Port Adapter Module for Windows X86/X64 & Cable - Walmart.com
Adafruit 6-pin AVR ISP Breadboard Adapter Mini Kit : ID 1465 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits