10502PC / SIO2PC USB rev. 2 – for Atari XL/XE by Lotharek

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10502PC / SIO2PC USB rev. 2 – for Atari XL/XE


Hardware, manuals, FAQ, and other info on manufacturers website – HERE

IMPORTANT NOTE: DEVICES sold before 15.08.2019Please, update the firmware

The device works in two modes::

  • Sio2PC-USB – connects the ATARI SIO port to a PC/MAC computer equipped with a USB PORT, so the PC acts like a floppy disk drive for ATARI
  • 10502PC – connects the Atari disk drive to a PC computer equipped with a USB PORT, so the PC can read / backup original 5.25″ floppies.


  • PC with a free USB port (works on other platforms like MAC/LINUX)
  • Any 8bit ATARI with a free SIO PORT

SIO2PC-USB mode manual: 

  • download and install one of the below:
  • Download VIRTUAL COM PORT drivers from FTDI PAGE and install them;
  • If You use stock windows, 10 drivers, You must force to load VCP drivers in the device manager.
  • connect 10502PC/SIO2PC to PC; Windows shall install drivers automatically
  • new COM port will appear in device manager
  • Start ASPEQT / RESPEQT –> TOOLS –> OPTIONS: select a proper COM number and CTS MODE –> SAVE
  • Press button START SIO PERIPHERAL EMULATION in the ASPEQT / RESPEQT  window (blue plug icon at bottom right)
  • Power ON ATARI with Sio2PC-USB connected and ATR/XEX file loaded in SLOT 1

10502PC mode manual: 

  • download KAFAR software (still in development) and extract it to Your hard drive


  • Before starting KAFAR software,  close any ASPEQT process running in the background
  • Run KAFAR software  (Windows 10 – RUN AS ADMIN)
  • You shall see a screen as follows:

  • 10502PC device was set in the proper mode
  • Connect 1050 to your ATARI disk drive
  • Power on the floppy disk drive, Insert the floppy disk and put the handle down


  • If your disk drive is set to D1 number, press 1 on the keyboard to read from this drive.
  • The program will prompt about the name and location of the new ATR file.


Additional information

Weight 0.25 kg
SIO Cable

Yes, No