StarTech 3.5mm 4 Position to 2x 3 Position Headset Adapter
11.95 USD
Compact black Y‑splitter converts a single 3.5 mm four‑pin headset jack into two separate 3.5 mm female plugs for headphones and mic, using 28 AWG copper wire with nickel‑plated contacts in a 0.2 m PVC cable.