This is the EVO1-5-U/UPS Digital Coaxial Splitter with dedicated voice port. It has one input, one passive output for voice/modem (-3.5 db loss), and four ports that are with gain (amplified, 0 db loss). Upstream is also with gain (0 dB loss). The instruction sheet says you should terminate unused ports into 75 Ohms.
Disclaimer: Install at your own risk. I have read that this is similar to what Comcast installs, though I don’t know that first-hand. It is working for my 3-room setup with X1 Comcast Xfinity cable modem/voice service.