Do I need a video fuser for DMA?

No. A fuser is the tidiest way to see both computers, but your setup works without one. Your second computer just needs a screen, and there are a few ways to give it one.

Your options

• Your monitor's second input, $0.
  Most monitors have more than one input. Plug your second computer into the spare one and switch with the monitor's input button. You only see one computer at a time. It's fine for setting up, but awkward while you play.
• A spare monitor.
  $0 if you have one, or about $80 for a cheap 1080p one. Both pictures are in front of you, side by side.
• A KVM switch, about $30.
  Both computers share one screen, keyboard and mouse, with a button to switch. Still one picture at a time. We don't sell one.
• A video fuser.
  Both pictures on one screen at once. The second computer's picture sits on top, and anything black on it is see-through. So only what your software draws shows over the game.

Fuser or capture card

They do different jobs. A capture card sends your main PC's picture into the second computer. It doesn't put anything on your monitor, so you'd still need one of the options above to see the second computer. Blurred's requirements don't list a capture card. If you add one anyway, it takes another USB 3 port on the second computer. Keep it off the group of ports the card uses, because anything that streams all the time can cause stutters. How many USB ports you need counts them up.

If you do want a fuser

Your monitor and your second computer decide the model, because both computers have to send the same resolution and refresh rate. Which one goes through the three, and Which second PC works with which fuser checks your second computer's ports.

Sound

HDMI and DisplayPort carry sound as well as the picture. Without a fuser, your main PC can play through your monitor's speakers or its headphone jack. A fuser sits in the middle of that.

• A fuser makes a new signal.
  It reads both pictures, puts the second computer's over your main PC's, and sends out a new picture. Sound only comes out if the fuser puts it back in.
• Whether the GODLIKE fusers pass your main PC's sound to your monitor's speakers: TBD.
  GODLIKE's specs, the shops that sell them and the setup guides we checked only talk about the picture, and none of the three has its own audio jack.
• Don't expect the second computer's sound on your monitor.
  Nothing we found says a fuser mixes the two computers' sound.
• Your monitor showing up in Windows proves nothing.
  The fuser passes your monitor's details on to your main PC, and those say it has speakers. So it can show in the sound list even if no sound gets there.

To set it up:

Keyboard and mouse

A fuser only carries the picture. The second computer still needs a keyboard and mouse (about $15 for a cheap wired set), or a KVM switch to share yours. An aim device doesn't do this job. It moves the mouse on your main PC, not on the second computer.

If you're not sure what fits your desk, post your monitor model and your second computer on the support forum and we'll tell you what we'd get.