The HP.DSCAB.015 docking station (USB-C, 13 ports) is generally compatible with all devices that have a USB-C port. However, to use the video outputs (HDMI, DisplayPort, VGA), your Acer Aspire 5 A515-45 must have a USB-C port with DP-Alt mode, which is not the case for all models in the Aspire 5 series. If your USB-C port does not support DP-Alt mode, the video outputs of the docking station will not work. To charge via USB-C, your laptop must also support Power Delivery, which is also not the case with all Aspire 5 models.

It is not clearly documented whether your specific model (A515-45) supports these functions. There are indications that some Aspire 5 models do not support DP-Alt Mode and/or charging via USB-C. In this case, the video outputs and charging via the docking station will not work.

I'm not entirely sure if the docking station will work fully with your Acer Aspire 5 A515-45. The information I have does not fully cover this situation. It is recommended to ask in the Acer Community or directly at the manufacturer if your model supports DP-Alt Mode and Power Delivery via USB-C.