1.25mm Pitch 4-pin Cable 20cm long 1:N Cable [Molex PicoBlade Compatible] : ID 4924 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: Keszoox MX 1.25mm Connector Kit and Premium Pre-Crimped Cables Compatible with Molex PicoBlade for Pixhawk Flight Controller Wire Kit Total 140pcs MX1.25 Connectors and 200pcs 28AWG Cable 150mm Wire : Electronics
Amazon.com: Keszoox MX 1.25mm Male Female Connector Kit and Premium Pre-Crimped Cables Compatible with Molex PicoBlade for Pixhawk Flight Controller Total 240pcs MX1.25 Connectors and 200pcs 28AWG Cable : Electronics