Installing USB serial modules on NAS Synology DS212+

Currently running a NAS Synology DS212+, DSM 4.0-2228

2 needed modules:
- ftdi_sio.ko
- usbserial.ko

insmod on each.

Possibly needed, create device node:

mknod /dev/usb/ttyUSB0 c 188 0
stty -F /dev/usb/ttyUSB0 1200 sane evenp parenb cs7 -crtscts

Plugging USB-Serial converted should show something like this on dmesg:

[1124863.890000] usbcore: registered new interface driver usbserial_generic
[1124863.900000] usbserial: USB Serial Driver core
[1124867.710000] USB Serial support registered for FTDI USB Serial Device
[1124867.710000] ftdi_sio 2-4:1.0: FTDI USB Serial Device converter detected
[1124867.730000] usb 2-4: Detected FT232RL
[1124867.730000] usb 2-4: Number of endpoints 2
[1124867.740000] usb 2-4: Endpoint 1 MaxPacketSize 64
[1124867.740000] usb 2-4: Endpoint 2 MaxPacketSize 64
[1124867.750000] usb 2-4: Setting MaxPacketSize 64
[1124867.770000] usb 2-4: FTDI USB Serial Device converter now attached to ttyUSB0
[1124867.770000] usbcore: registered new interface driver ftdi_sio
[1124867.780000] ftdi_sio: v1.5.0:USB FTDI Serial Converters Driver
  1. OyvindE’s avatar

    Im trying to install a RFXtrx on the synology, but im a novice in these type of things. Could you explain step by step what to do with the 2 modules explained in the beginning of your post?

    Best Regards


    1. sirloon’s avatar


      insmod path/to/module.ko

      will simply load module into the kernel. lsmod will show it listed if properly loaded. You would need to copy ko module file to /lib/modules//some/sub/dir in order to put it in “official” path. You’ll then be able to load it automatically at boot for instance. When properly installed, you can use:

      modprobe module

      (without .ko extension). modprobe will scan /lib/modules/… looking for your module.ko file.

      Hey, RFXtrx looks nice ! Good luck.



  2. Heisenberg’s avatar

    Hi, I also tried to get RFXtrx working on my DS212 and followed the tutorial above but still can’t get it working.

    insmod ftdi_sio.ko
    mknod /dev/usb/ttyUSB0 c 188 0

    after doin this I can’t find the device with dmesg

    Is it possible to make step by step guide for dummies like me?


    1. sirloon’s avatar

      maybe it appears differently in dmesg ? I would’nt know what else I could tell you, sorry…


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