Amazon.com: LEGO Mindstorms EV3 L-Servo Motor : Toys & Games
BrickLink - Part 10916 : LEGO Electric, Cable USB for Mindstorms EV3, USB A-Type Male to USB Mini-b 5-Pin Male (Length 2 meters/6 Feet) [Electric, Wire & Connector] - BrickLink Reference Catalog
RJ12 Jack Connectors - EV3/NXT LEGO Compatible - Pack of 10 : ID 4434 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
NXT Extender Cable from MindSensors
Extender for NXT/EV3 Cables
HiTechnic NXT Extended Connector Cable Set – Modern Robotics Inc
used EV3 USB Cable for mindstorms intelligent brick robot Original Lego OEM | eBay