it seems whai i really need is a newer technologies microdock. hope it does not require software to be installed.
I loved the Duo series. It may look scary to disassemble but it's actually quite easy. Nevertheless, docks are an easy way to go.
As for all the Etherdocks, yes you do need drivers. I haven't looked in a while but the Ethernet Micodock was one of the most prized of all the docks and it was quite expensive and extremely rare. If you do find one, I have a driver for you.
In the interim, you should definitely get a SCSI microdock, which has an HDI-30 SCSI connector and an ADB connector (like all microdocks).
You will also need either a switchable SCSI adapter or a special 30 pin HDI-SCSI to DB-25 SCSI cable and a DB-25 female-to-female coupler as well as a DB-25 to HDI-30 (29-pin) SCSI peripheral cable. I have never put two powerbooks together where one was in SCSI disk mode. It may not be possible if one of the PowerBooks does not supply termination Power and may require a powered terminator as well. Did they even make HDI-30 to HDI-29 pin cables? The whole process is MUCH simpler with a vintage desktop, then you need just the one cable. I brought my PowerBook 100 back to life through SCSI disk mode via my compact Classic. FYI, The very first PowerBook had SCSI disk mode, but not the early 100 series. Most others have it.
In any event you can install software this way but you have to exercise caution as you must tell your installers what kind of Mac to install for. Or use something like "Wish I Were" to fool the installers into thinking the 5300 is the 2300.
The HDI-20 external floppy & microdock is a nice thing to have, but nowhere near as fast as SCSI disk mode.
The 2300 is a fantastic machine. Given its size and power I would definitely try to get it going again. Like anything worth having it takes a little bit of effort to set it up, but once you do it really pays back. I used my 2300 from 1996 to 2000 when I upgraded to a PowerBook G3 Firewire and continued to use it until about 2003 on a regular basis. In my opinion it is the best looking of all the 90s PowerBooks.