This cord can be used to connect Vivitar flash units including the 273, 283, 285, and 285 HV and likely other Vivitar flash units, to a device requiring a standard male PC connector.

One common application is to connect a Vivitar flash unit to an optical slave such as this product from FlashZebra.com.

Another common application would be to connect a Vivitar flash to the 4 channel V1, V2, or V2s style of inexpensive radio slaves sold by Gadget Infinity, and other photographic merchants.

Price: $4.50 + shipping