Olympus Pen External Mic Adapter SEMA-1 | #1791316280
Amazon.com: Digital Camera External Microphone Compatible with Olympus Pen E-PL10 Mirrorless Digital Camera, XM-AD2 Dual Channel XLR-Mini Audio Adapter for DSLRs, Camcorders and Pro Video Cameras : Electronics
Olympus ME30W 2-Channel Professional Microphone Kit