hello, does this ukulele have truss rod http://www.gear4music.nl/en/Guitar-...C-Electro-Acoustic-Concert-Ukulele-Gloss/1HJA ?
Truss rods are required for instruments with steel (high tension) strings. Without a truss rod, the guitar's wooden neck would gradually warp (i.e. bend) beyond repair due to applied high tension. Such devices are not normally needed on instruments with lower tension strings, such as the classical guitar, which uses nylon (previously catgut) strings.
Funny as Pono is the only brand ukulele Ive read in these very forums needing a truss rod adjustment bought new.
I would clarify that they are the only ones that CAN perform such an adjustment. Surely, there are many others which might NEED one as well, but simply don't have that option, so you'll just have to go with the neck relief that was built into it - and hope that it will never shift. After all, the usefulness of an adjustable truss rod will only become evident over a longer period of time, when the necks on other ukes may twist and bend.
As has been pointed out, though, most ukes will be fine anyway, so I wouldn't be too worried about having a truss rod or not.