B1300 USB File Sharing not discoverable

Using the same USB-3 stick with ExFAT file system that works fine in AR300M, I cannot discover the drive when attached to B1300. What might be the reason?

If I connect manually using IP and port 445, it works. Just that there is no hostname shown, only the IP.

The settings are the same (share via LAN).

I noticed B1300 has a much older version of the plugin kmod-usb-storage (4.4.60-1) than AR300M (4.9.120-1)…

B1300 is QSDK, which is older than the AR300M openwrt…

QSDK is needed for the mesh and Wave2 items for WiFi