The Steam Deck and Nintendo Switch are incredible on the go, but their built-in screens can feel cramped during long sessions. A portable monitor gives you a bigger canvas without tethering you to a desk. We tested the top contenders and found two standouts: the KYY Portable Monitor for budget-conscious gamers and the ASUS ZenScreen OLED for those who want the best picture quality.
The Steam Deck and Nintendo Switch are built for portability, but there's a trade-off: small screens. After a couple of hours hunched over a 7-inch display, eye strain sets in, and you start wishing for something bigger. A portable monitor solves that — it's light enough to toss in a bag, connects over a single USB-C cable, and gives you a 15- or 16-inch display wherever you are.
Both the Steam Deck and Switch support USB-C DisplayPort Alt Mode, which means video and power can travel through one cable. The key spec to look for is Power Delivery (PD) passthrough — that way your monitor can charge your handheld while it's connected, so you don't drain the battery mid-game.1
Here are the two portable monitors that make the most sense for your handheld console.
If you want a solid 1080p experience without spending a lot, the KYY Portable Monitor is the pick. It's a 15.6-inch IPS panel at 1920×1080, which matches the Steam Deck's native resolution perfectly — no scaling issues, no blur. The IPS panel gives you decent viewing angles and color reproduction for the price.
What makes it a great fit for handhelds is the USB-C connectivity with PD support. You plug one USB-C cable from the monitor to your Steam Deck or Switch, and it handles both video and power. The monitor itself is slim (about 0.3 inches) and comes with a smart cover that doubles as a stand.1
The built-in speakers are nothing special — you'll want headphones or the Deck's own audio — but for the price, this is the most practical option for most people.
For gamers who care about image quality, the ASUS ZenScreen OLED (MQ16AH) is in a different league. It's a 15.6-inch OLED panel with a 1920×1080 resolution, but the real story is the contrast. OLED means true blacks — each pixel lights itself, so dark scenes in Elden Ring or Zelda: Tears of the Kingdom look deep and immersive rather than washed-out gray.
Color accuracy is excellent out of the box, covering 100% DCI-P3. If you also use your portable monitor for photo editing or creative work alongside gaming, this is the one to get.2
It connects via USB-C with DisplayPort Alt Mode and supports PD passthrough, just like the KYY. The build is premium — an aluminum alloy frame with a built-in kickstand that feels sturdy. The trade-off is price: you're paying a significant premium for that OLED panel.
| Spec | KYY Portable Monitor | ASUS ZenScreen OLED |
|---|---|---|
| Resolution | 1920×1080 | 1920×1080 |
| Panel Type | IPS | OLED |
| Connectivity | USB-C (DP Alt + PD) | USB-C (DP Alt + PD) |
Get the KYY if you want a capable, affordable monitor that does the job without fuss. It's the right choice for most Steam Deck and Switch owners — the IPS panel looks good, the single-cable setup works reliably, and you won't feel bad throwing it in a bag.
Get the ASUS ZenScreen OLED if you're a visual quality snob (in a good way) and your budget allows. The OLED panel transforms how games look, especially in dark environments. It's also a legitimate tool for creative work if you edit photos or video on the go.
Either way, make sure your USB-C cable supports both DisplayPort Alt Mode and Power Delivery — a cheap cable will bottleneck your setup.1
Disclosure: As an Amazon Associate, AskBuy earns from qualifying purchases. This doesn't affect our recommendations — we only recommend what we'd buy ourselves.
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