VP-551X is a professional 4K@60Hz presentation scaler/switcher supporting HDMI, VGA, and composite video inputs. It provides flexible audio selection, video scaling, and simultaneous HDMI and HDBaseT output. Processed audio is available through balanced stereo, S/PDIF, and built-in speaker outputs.
| Inputs | 8 HDMI: On female HDMI connectors |
| 1 Computer Graphics: On a 15−pin HD connector | |
| 1 Computer Graphics: On a 15−pin HD connector | |
| 1 Computer Graphics: On a 15−pin HD connector | |
| 2 Microphones: On 6mm jacks | |
| Outputs | 1 HDBaseT: On an RJ–45 connector |
| 1 HDMI: On a female HDMI connector | |
| 1 Balanced Analog Stereo Audio: On a 5–pin terminal block | |
| 1 Digital Audio: On a female S/PDIF connector | |
| 1 Speaker: On a 4−pin terminal block | |
| Video | Max. HDBT Range 130m (430ft) at 1080p@60Hz 36bpp) 100m (330ft) at 4k @60Hz (4:2:0) |
| Ports | 1 RS–232 (Data): On a 3–pin terminal block |
| 1 RS–232 (Control): On a 3–pin terminal block | |
| 1 Ethernet: 100Mbps, on an RJ–45 connector |