CE: StarTech.com MUYHSMFF 3.5mm 4-Pin to 2x 3-Pin 3.5mm Headset Splitter Adapter - M/F - STARTECH.COM

CE: iPod Female End to 3.5 mm Male Aux Extension Cable 4 feet - Generic

PC Accessory: 30-pin Male to Female Dock Extender for iPod and iPhone - Black Extension Cable (4 feet) - neXplug

Lighting: 10pairs connector male female 4 pins cable wires for led strip RGB 5050 RGB 3528 IR controllor easy solderless none welding

Automotive Parts and Accessories: Curt Manufacturing 25012 1/4 In Coupler Pin With 12 In Chain - Curt Manufacturing

Lighting: 2pcs 2.5Meter/8.2ft extension cable connect female plug to led strip light RGB5050 3528 color changeable 4pins wire line - Generic

Automotive Parts and Accessories: Kolpin 3 Way Hitch, 1 1/4-Inch - Kolpin

Wireless: 3.5mm Headphone Adapter for Apple iPhone Recessed Jack, 3.5mm, White - Gino

Toy: NBC Jack 4 Pack Pin set - NBC

CE: 10 Pcs USB Female Type-B Jack 4-Pin 90 Degree PCB DIP Socket Connector - Gino

The above is "Jack 4 Pin, CE: Startech.Com MUYHSMFF 3.5Mm 4-Pin To 2X 3-Pin 3.5Mm Headset Splitter Adapter..." recommended related products, Please click on the picture to see product details and jack 4 pin reviews!