L300 Ultra-Compact ITX Case - 8.5L Portable Gaming Chassis

In this review of the L300 Ultra-Compact ITX Case the bottom line is simple: it is for anyone who needs a truly portable small-form-factor gaming or workstation build without giving up a dual-slot GPU. The reviewer found the 8.5L vertical layout maximizes desk space while still accommodating long cards and SFX power supplies, and the included dual reverse PCIe 4.0 riser and DP 1.4 cable remove many compatibility headaches. Overall the case is aimed at builders who prioritize compactness, mobility, and straightforward GPU support.

Key Features

• Ultra-compact vertical design: The 8.5L chassis (188 x 135 x 356mm) saves desk space while still fitting dual-slot GPUs up to 325mm for desktop-grade graphics in a small footprint.
• High airflow mesh panels: Full-perforation steel mesh side panels and dual 120x15mm slim fans create side-intake/top-exhaust airflow to keep GPU and CPU temperatures in check during long sessions.
• GPU-ready plug-and-play cabling: The special dual reverse PCIe 4.0 riser cable and 1.5m DisplayPort 1.4 extension eliminate signal loss and simplify installing long modern GPUs and multi-monitor setups.
• Lightweight yet rugged build: High-density steel construction with a scratch-resistant finish, reinforced corners, and a side steel handle make the case easy to carry and durable for travel.
• Expandable I/O and storage support: Front I/O includes Type-C (10Gbps) and two USB 3.0 ports, and internal mounts accept SFX/SFX-L PSUs plus 2.5in drives for compact expandability.

Who It's For

The L300 is best for gamers, content creators, and professionals who need a portable mini-ITX system that still takes a beefy dual-slot GPU like an RTX 3060/3080 and an SFX PSU. Builders who attend LAN events, live in small rooms, or want a compact desktop that travels easily will appreciate the handle, light weight, and included riser and DP cable.

Those who should look elsewhere include people who require multiple 3.5in drives, full ATX motherboards, or extensive internal cooling radiator support; the L300 prioritizes compactness over maximum internal expansion.

Pros & Cons

Pros

• Truly portable 8.5L footprint that still fits long dual-slot GPUs for desktop-class performance.
• Effective mesh cooling with dual slim fans and high-density panels for sustained workloads.
• Includes useful accessories: a dual reverse PCIe 4.0 riser and DP 1.4 cable for plug-and-play GPU installation.
• Sturdy, lightweight steel frame with a side handle and anti-vibration feet for travel stability.

Cons

• Compact interior limits drive bays and large cooling radiator options compared with larger cases.

Specifications

Form factor	Vertical mini-ITX
Volume	8.5L (188 x 135 x 356mm)
GPU support	Dual-slot up to 325mm
PSU compatibility	SFX / SFX-L
Cooling	Dual 120x15mm slim fans; side intake, top exhaust
Included accessories	PCIe 4.0 riser cable; 1.5m DP 1.4 cable; steel handle; manual
Front I/O	1x Type-C (10Gbps), 2x USB 3.0 (5Gbps)

Our Verdict

The L300 is a strong value for builders who want a portable, desk-friendly case that still accepts long dual-slot GPUs and SFX PSUs; the included riser and DP cable remove common setup friction. It is a sensible choice when small size, solid build quality, and plug-and-play GPU support matter more than drive capacity or large liquid cooling options.

Frequently Asked Questions

Can it fit a full-length dual-slot GPU?
Yes, the chassis accepts dual-slot GPUs up to 325mm in length.

Does it include a riser cable and display cable?
Yes, it ships with a special dual reverse PCIe 4.0 riser cable and a 1.5m DisplayPort 1.4 cable supporting 4K@120Hz.

What power supplies are supported?
The case is compatible with SFX and SFX-L power supplies for compact builds.