BOSS SF-4600C still works but top & bottom have come apart. No way to back-up.
Source: http://imslsoft.com/faq.htm#faq1
What do I need to communicate between my Casio digital diary and my PC?
Most Casio Digital Diary models have a small 2.5mm serial port built into the side of the unit. It can be used to communicate between two Casio Digital Diary units, or with another serial device such as a PC (or a serial printer on some older models).
To connect between two compatible Digital Diary units, you need only a 3-lead crossover cable with a 2.5mm plug on each end, such as Casio's SB-60 or SB-62 cable. You can buy these cables from a Casio accessory supplier such as Windows Link.
To connect to a standard 9 or 25-pin RS232 PC serial port, you need a special Casio-specific adapter cable (more information below). The Casio diary uses its own unique communications protocol, and requires a Casio diary backup program on the PC. You can build your own cable or buy one by mail order, and use it with shareware software such as XLink/Win, or you can buy a kit complete with cable and software such as those sold by Casio or Windows Link
For more information on serial cables, see Cables. For more information on software and kits see What communications packages are available for the Casio digital diary?
MEOMRY
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