Andrew writes: All MMJ cables are supposed to be crossover cables. If you are using DB-9 or DB-25 adapters on the ends of the MMJ's, then they have to be appropriate to the wiring for the device. Examples: Rdy Out TX+ TX- RX- RX+ Rdy In Adaptor Gender 1 2 3 4 5 6 Use with: -------------------------------------------------------------------------- H8575-A F 20 2 7 7 3 6&8 VTxxx terminal H8571-C M 6 3 7 7 2 20 Digital printer H8571-D M 6 3 7 7 2 20 Modem H8571-E M 20 2 7 7 3 6&8 Female terminal or LaserWriter -------------------------------------------------------------------------- If you've got the wrong adapter, you may be able to open it up and swap around pins 2&3, 6&20. Some are shells you can open up and use the DB-pin-remover tools to swap things around, others are molded solid and you can't take them apart so easily. MMJ was a nice concept for serial cables. Tim.