Amazon.com: Qunqi 60Pcs 40 Pin 2.54mm Single Row Straight Female PCB Header Connector Strip for Arduino Shield : Electronics
50 Set Mx2.54 Dupont Connector 2/3/4/5/6/8/12pin With Belt Buckle Single Row 2.54mm Right Angle Pin Header + Housing + Terminals - Connectors - AliExpress