LH43QETELGC is the base model, "XEN" is the country suffix. It should be the following model: https://www.samsung.com/at... The specifications on the Samsung page are not detailed enough, but the device should be equipped with Tizen 4.0 (VDLinux) as OS, according to the supplier.
We don't use this TV yet, but if by remote connection you mean the Magic Info function, I can tell you that we have been using another TV at the company's reception for about 3 years and it works fine. You have to get used to the Magic Info Lite Player and then it works. In our case, we have set up schedules with various PDF, PPT and MP4 files.