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Black Box serial splitter with two DB9 female and one DB9 male ports

Black Box Corporation

Black Box Corporation EPXR15 serial splitter

SKU CH-PDTM-DFZK0 MPN EPXR15

A passive, port-powered serial splitter connects two RS-232 devices to one modem without switching or configuration

  • TypeConsumer Electronics
  • Passive serial splitter needs no external power
  • Connect two RS-232 devices to one modem port
  • Two DB9 female and one DB9 male ports
  • Plug-and-play setup requires no configuration
  • RoHS compliant, made in the United States

Serial port splitter for dual-device access

The Black Box EPXR15 is a passive adapter that lets two RS-232 terminals share a single modem connection. It requires no external power and works immediately after plugging in. The unit suits technicians who need simultaneous access to one DCE port from two DTE sources. Setup involves no software or configuration steps.

Two DB9 female hosts to one DB9 male modem

The splitter combines two 9-pin DTE ports into one 9-pin DCE port using a purely passive circuit. It handles standard RS-232 signalling without active buffering or signal regeneration. Cable runs beyond the RS-232 distance limit or high-speed synchronous modes will exceed the device’s capability. No external supply is needed for operation.

Passive RS-232 port splitter with DB9 connectors

The defining specification is the passive, port-powered DB9 female-to-male arrangement that merges two DTE hosts onto one DCE modem port. Buyers who need active signal conversion, flow-control translation, or support for more than two host devices must choose a different product. RoHS compliance is confirmed for this unit.

Highlights

  • Passive serial splitter needs no external power
  • Connect two RS-232 devices to one modem port
  • Two DB9 female and one DB9 male ports
  • Plug-and-play setup requires no configuration
  • RoHS compliant, made in the United States

Specifications

BrandBLACK BOX CORPORATION
TypeConsumer Electronics
Shipping weight0.45 kg
Package size142 × 99 × 33 mm

Questions about this item

Will the EPXR15 let me keep my legacy RS-232 terminals connected to a single modem port?

Yes, the splitter combines two DB9 female DTE ports into one DB9 male DCE modem port so both terminals share the connection without switching.

How can I verify the EPXR15 is passing data correctly after I cable it up?

Because the unit is passive and port-powered, a successful link shows normal RS-232 traffic on both DB9 female ports with no configuration or indicator lights required.

Does the EPXR15 package include any cables or power adapters I would need to buy separately?

The splitter itself has integrated DB9 connectors and draws power from the serial lines, so no external power supply or additional cables are supplied or required.

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