Due to the fact that an adapter is required for use with an A1000, i give you this quote from amiga-hardware.com: "Another peculiarity are the serial and parallel ports. All other Amigas have 25pin FEMALE parallel ports, and 25pin MALE serial ports, whilst the A1000 has a 25pin MALE parallel port and a 25pin FEMALE serial port. Consequently extreme care must be taken to ensure that any expansions plugged into these ports, are infact plugged into the correct port, with an appropriate adaptor if necessary."
This means that it's meant to go in the serial port, and most likely is indeed the BTX-cable. Perhaps the owner has the BTX box as well?
-Paul
