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IEEE 1284 Serial to Parallel Converter

Connect async serial hardware to an IEEE 1284 bidirectional interface.


Please call 877-877-2269 for a replacement product or part.
Extended Double Diamond™ Warranty Available (3 Additional Year)

Product Features

  • Runs at speeds up to 115.2 kbps.
  • Supports two IEEE 1284 Bi-Tronics modes: Compatible and Nibble (switchable).
  • Super compact, pocket size.
  • LEDs provide at-a-glance monitoring.
  • Power choices: from both interfaces or from an external power supply.
  • Features 10-kV ESD (electrostatic discharge) protection on the serial interface.


Get more out of your equipment with the IEEE 1284 Serial to Parallel Converter from Black Box. Use your speedy IEEE 1284 laser printer with your async RS-232/423 hardware. You can use this converter with all your hardware equipped with an IEEE 1284 Bi-Tronics® parallel interface.

This tiny box gives you lots of operational options because it works in either Level 1 Compatible or Nibble modes (according to the IEEE 1284 standard). So it supports the high speeds—up to 115.2 kbps—necessary for graphics-intensive laser-printer applications. Depending on your equipment, all you have to do is set a switch to change modes.

Conversion is simple. On the serial side, the converter translates Nibble operations into standard HP® LaserJet® IV serial printer escape sequences. This enables operation with standard printer drivers.

On the parallel side, the converter translates all commands received from the PC or other serial devices into Bi-Tronics Nibble operations or compatible operations.

The converter supports all Bi-Tronics Level 1 compatible hardware and is backward-compatible with Level 2 hardware.

Tech Specs

CE Approval Yes
Connectors Serial: (1) RJ-45; Parallel: (1) 36-pin Centronics® M
Electrostatic Discharge (ESD) Protection 10 kV on the serial interface
Flow Control Serial: Hardware or software (X-ON/X-OFF), user selectable; Parallel: Hardware
Indicators (2) LEDs: Power, Data Mode
Interface RS-232, RS-423
Leads Supported Serial: 1–8; Parallel: Pins 1–13 active; 31, 32, 36 held high; 16–30 ground
Power From RS-232/423 and IEEE 1284 interfaces; External wallmount transformer: Input: 120 VAC, 60 Hz, 10 watts; Output: 9 VDC, 500 mA
Power Requirements IEEE 1284 B interface must support optional 5 V on Pin 18, IEEE 1284 C must support interface Pin 36; otherwise, use included external AC power supply
Size 3"H x 2.4"W x 0.8"D (7.6 x 6.1 x 2 cm)
Speed 9600 bps; 19.2, 38.4, 115.2 kbps
Transmission Format Serial: Async, full-duplex; Parallel: IEEE 1284 [supports Nibble and Level 1 compatible modes (switchable)]
Weight 0.5 lb. (0.2 kg)
This product works with:
• RJ-45 (8-Wire) Modular Cable, Straight-Pinned (EL08MS)
• Modular Adapter Kits (FA065, FA027)
Questions? Contact our FREE Tech Support.

* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.


Double Diamond Warranty

Extended 1 Year Warranty Available

Protect your purchase with an additional 1 Year Double Diamond™ warranty!
Cost: $15.30

Extended 3 Year Warranty Available

Protect your purchase with an additional 3 Year Double Diamond™ warranty!
Cost: $30.59


Double Diamond™ Warranty (Standard)

Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

The IEEE 1284 Serial to Parallel Converter comes with a standard 1 YEAR warranty already included.

During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

Plus, get an Extended Double Diamond Warranty.

You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

* Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.