Looking for a manual on this startech device

We have this device (see picture) that I need a manual on to see what I need to do to upgrade from VGA to HDMI. I am replacing our computer with HDMI GPU and this device is currently being used to operate a TV and a monitor

Hello @RonC1952,

Thank you for joining the StarTech.com forum.

And thank you for your question. I took a few moments to review our products, and this appears to me to be the transmitter unit for the ST121UTP VGA Extender kit.

Column 1
VGA Video Extender over Cat5 (ST121 Series)
Mfg.part: ST121UTP


The manual for this device can be found on the drivers and downloads section of the StarTech.com product page.

ST121UTP Drivers and Downloads The manual is listed here as: st121utp_manual.pdf

We have HDMI extenders if needed as well: HDMI Extenders.

Please let us know if you would like us to assist or would like some recommendations for alternative HDMI products that will fit your needs.