480p. It doesn't upscale or alter the image because it takes the best possible output from the Dreamcast (VGA signal) and outputs it as HDMI (along with audio). Trying to upscale the image (at this point in time) causes too many issues. The only other way is to get a 'DCHDMI kit' that is installed inside the internals of the Dreamcast and that requires a lot of skilful soldering and is an expensive modification. This is probably the best 'plug and play' solution right now. Thank you, Kaico

Anyone know if this is compatible with the elgato hd capture card? the pound cable did not seem to work with it.

Nope. Tried it just now & it says "format not supported."

The quick-start guide says that the led light would be green to indicate that it is working, yet it is blue and still working. should i be worried?

I think as long as it's still working you should be fine. I don't even use mine much anymore meaning my Dreamcast.

Why won't it go full screen? the size is about 16" x 16" on a large 50" sony tv

That would be part of your TV's settings. The Dreamcast runs at a low resolution, so it's not using the full screen. Look in your TV's settings for something that says "stretch", "fit", or "scale". Your TV may also just not support 480p video.

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Kaico Dreamcast HDMI Adapter, Plug & Play Converter with VGA & RGBS Support

Product ID: 348015610

Details

Brand
Kaico
Color
silver
Compatible Devices
Television
Connector Type
HDMI VGA
Item dimensions L x W x H
3.54 x 1.77 x

🎮Seamless Dreamcast Compatibility

📺Supports VGA & RGBS Modes

🔌Plug & Play Convenience

$133.32

Duties & taxes included

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎮 Elevate your retro gaming with flawless HD clarity—because your Dreamcast deserves the best!

NO EXTRA GEAR NEEDED - Plug directly into modern TVs—no power adapters or converters required.
PEACE OF MIND WARRANTY - 12-month Kaico Labs support ensures your Dreamcast stays game-ready.
CRYSTAL CLEAR HD OUTPUT - Experience zero audio/video loss with pristine HDMI signal conversion.
COMPACT LIGHTWEIGHT DESIGN - Sleek 46g adapter fits perfectly into any retro gaming setup without clutter.
UNIVERSAL DREAMCAST COMPATIBILITY - Switch effortlessly between VGA and RGBS for every game in your collection.

The Kaico Dreamcast HDMI Adapter is the first to support both VGA and RGBS signals, delivering high-quality HDMI output with no audio or video loss. This plug-and-play converter requires no additional power or adapters, ensuring seamless compatibility with all Dreamcast games on modern TVs. Compact and backed by a 12-month warranty, it’s the ultimate upgrade for any Dreamcast enthusiast seeking crisp visuals and perfect sound.

Specifications

ASIN	B07SK85NGH
Customer Reviews	4.5 4.5 out of 5 stars (1,692)
Item Dimensions LxWxH	9 x 4.5 x 1.5 Centimeters
Item Weight	46 g
Item model number	5060556730214
Manufacturer	Kaico
Net Quantity	1.0 Count
Product Dimensions	8.99 x 4.5 x 1.5 cm; 46 g

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