JSAUX ModCase for Steam Deck and Steam Deck OLED - Modular Case

In this review the JSAUX ModCase earns attention for owners of the Valve Steam Deck (2022) and Steam Deck OLED (2023) who want a single modular solution for protection and desktop connectivity. The kit's biggest selling point is how it combines a protective back shell, a detachable front cover, a metal stand and a strap with a powerful 11-in-1 docking station, so users get both rugged everyday protection and a full-featured hub for 4K gaming sessions without juggling separate accessories.

Key Features

• Complete modular kit: The package includes a protective back case, detachable front shell, metal bracket and strap so the Steam Deck is protected on the go and configurable at home.
• 11-in-1 docking station: Provides HDMI 2.1 and DisplayPort 1.4 output plus SD/TF card slots and 100W power delivery to support 4K@120Hz displays and fast charging while docked.
• Perfect fit: Cut-outs are aligned for both Valve Steam Deck (2022) and Steam Deck OLED (2023), giving easy access to all ports and controls without removing the case.
• Impact protection: Construction uses eco-friendly PC-ABS and silicone with a TPU-wrapped edge to reduce shock and help prevent screen scratches and cracks during transport.
• Expandable back slider: The modular slider on the back accepts compatible add-ons such as the 11-in-1 hub or future accessories to expand functionality.

Who It's For

This kit is ideal for Steam Deck owners who switch frequently between handheld play and a desktop setup and want one integrated solution that protects the device and provides a full-featured hub for external displays and peripherals. Gamers who value a neat travel setup will appreciate the front shell and strap for safe carriage in backpacks or bags.

Those who only need a slim protective sleeve or a minimal portable case without docking capability should look elsewhere, since the ModCase is focused on a modular protective system and a powerful dock rather than being the lightest or cheapest cover available.

Pros & Cons

Pros

• Combines protection and a high-performance 11-in-1 dock so users get desktop connectivity and charging in one bundle.
• Solid build and comfortable grip texture that customers report as reassuring for daily use and travel.
• Good protection materials with TPU-wrapped edges and felt cushions to reduce screen abrasion.
• Modular design and integrated metal stand make adding accessories straightforward.

Cons

• The combined kit is bulkier than minimalist covers, so it is not aimed at users seeking the thinnest profile.
• Users must avoid opening the back stand while the dock is in use to prevent SD card obstruction as noted in the instructions.

Specifications

Compatibility	Valve Steam Deck (2022) and Steam Deck OLED (2023)
Dock outputs	HDMI 2.1 and DisplayPort 1.4
Video capability	Supports up to 4K@120Hz
Card support	SD and TF card slots
Power delivery	Up to 100W charging
Materials	Eco-friendly PC-ABS, silicone, TPU wrap and felt cushion
Box contents	Modular back case, detachable front shell, 11-in-1 docking station, metal bracket and strap

Our Verdict

The JSAUX ModCase is a practical, well-built modular solution for Steam Deck owners who need both strong protection and a capable desktop hub. It is good value for anyone who wants to avoid buying separate accessories and prefers a single kit that protects the handheld while unlocking 4K display, card reading and high-watt charging at a desk.

Frequently Asked Questions

Does this case fit the Steam Deck OLED?
Yes. The ModCase is designed to fit both the Valve Steam Deck (2022) and Steam Deck OLED (2023) with aligned cut-outs for ports and controls.

Can the dock power the Steam Deck while outputting 4K?
Yes. The 11-in-1 docking station supports up to 100W power delivery and provides HDMI 2.1 and DisplayPort 1.4 for high-resolution output.

Will the standing support interfere with the dock?
Do not open the back stand while the dock is in use, as the stand may obstruct the SD card slot and cause issues.