Amazon.com : Foto&Tech Male to Male M-M Flash PC Sync Cable Cord 12-Inch Coiled Cord with Screw Lock Compatible with Nikon, Canon, and Most DSLR Cameras Flash Trigger (Male to Male Flash
What is/does flash sync port do? -- Flash and Studio Lighting in photography-on-the.net forums
External Flash Units
Leica Flash Sync Cable S for S Type 006 Camera (6′) - Leica Camera Shop
canon - What are the different PC sync ports? - Photography Stack Exchange
Amazon.com : DSLRKIT 3.5mm to Male Flash PC Sync Cable with Screw Lock for Rook RF-16NE RF-603 : Pc Sync Cord : Electronics
2 PCS) 2.5mm to Male Flash PC Sync Cable,12-Inch
Flash PC Sync Cable for Triggering Speedlite Flashes | Pluto Trigger
FlashZebra.com: Canon Camera ETTL Pass Through Hotshoe with Screwlock PC Sync Port (Item #0268)
Aputure Pro-Grade TTL Off-Camera Hot-Shoe Flash Sync Cable – Fotodiox, Inc. USA
Vivitar PC-1 Sync Cord 236300 B&H Photo Video
PC Sync Cord Connector – Tony & Chelsea Northrup
How to use Sony a7r3 a7riii a9 PC sync port with flash from the past - YouTube
3.5mm Sync PC Cable for Flash Trigger – Foto&Tech
Contax OEM Flash Sync Port Cap Cover for G Rangefinder and 35mm SLR Cameras | eBay
Yongnuo LS-PC635 Sync Cable - Cables and Other - Camera Gear
FLASH SYNC CORD TUTORIAL | Use TTL Extension Sync Cords to Keep a Camera's TTL Capability - YouTube
PC sync - flash camera connections with older flash units
Flash Triggers
Tentacle to Flash Synchro Socket | Tentacle Sync Shop