Help Identifying HDMI/TV over IP Solution from the Mid 2010s

Hey everyone! I'm on the hunt for a specific HDMI/TV over IP solution from around the mid-2010s to 2020. Here's what I remember: I think the slave boxes were blue with a yellow or white logo, about the size of a VHS tape or two DVD cases stacked together. They had Ethernet inputs and HDMI outputs to connect to nearby TVs, and offered various output ports. These slave boxes linked to a master broadcast unit, which I remember as quite bulky—possibly a 2U or 4U unit that was loud and hot. Management was done either through a dashboard or by mirroring a desktop to several screens. It was capable of handling multiple sources; for instance, it showcased a rotating slide deck with visitor schedules and even some sports channels. Does anyone know the vendor name or the specific solution I'm referring to? I'm pretty sure it was available in EMEA and maybe the US as well. Thanks a bunch!