L300 Mesh Mini ITX Computer Chassis - Compact Vertical 8.5L

Our review of the L300 Mesh Mini ITX Computer Chassis finds it most useful for anyone who needs a truly compact desktop rig without giving up a full-size dual-slot GPU. At 8.5L and weighing just 4.4 lbs, it really is a tiny powerhouse for gamers, content creators, and professionals who need portability and desktop-grade graphics in one box. The biggest reason to buy is the combination of a vertical, space-saving layout and a GPU-friendly design that supports up to 325mm cards while keeping temperatures manageable with dual slim fans and perforated mesh.

Key Features

• Ultra-compact vertical design: The 8.5L footprint saves desk space while still accommodating dual-slot GPUs up to 12.8in (325mm).
• Advanced mesh cooling system: Dual 120x15mm ultra-slim fans plus full-perforation steel mesh enable side intake and top exhaust to move heat away from the GPU and CPU efficiently.
• GPU-friendly riser and DP cable: Ships with a dual reverse PCIe 3.0 riser cable and a 1.5m DP 1.4 extension to simplify GPU installation and multi-monitor setups.
• Portable, rugged frame: High-density steel construction with a scratch-resistant finish, reinforced corners, and a side steel handle makes LAN transport easier.
• Expandable I/O and power options: Front Type-C (10Gbps) and two USB 3.0 ports plus SFX/SFX-L PSU compatibility allow modern connectivity and small-form-factor PSUs.
• Dust-resistant mesh: High-density mesh blocks dust while still permitting strong airflow for long gaming or rendering sessions.

Who It's For

The L300 suits gamers and creators who want a desktop-class GPU like an RTX 3060 or similar inside a highly portable mini-ITX chassis. It is particularly good for users who attend LAN events, students in small dorm rooms, or professionals who need a compact workstation that still accepts dual-slot, long GPUs.

It is less well suited for builders who require multiple drive bays, large air coolers, or ATX power supplies; users planning extensive water cooling or a multi-GPU setup should look for a larger case. Also, builders should be comfortable adjusting BIOS settings to force PCIe Gen3 when using the included riser for maximum stability.

Pros & Cons

Pros

• Excellent space-to-performance ratio for long dual-slot GPUs in an 8.5L frame.
• Good airflow design with dual slim fans and full-perforation mesh that balances cooling and dust protection.
• Includes practical accessories: PCIe 3.0 riser cable, DP 1.4 cable, and steel handle for portability.
• Front Type-C and USB 3.0 ports add modern connectivity for peripherals and fast transfers.

Cons

• Airflow feedback is mixed among users, so extreme thermals under sustained heavy load may require careful fan tuning or component choice.
• Very compact interior means tight cable routing and limited space for additional drives or large cooling solutions.

Specifications

Volume	8.5L
External Size	7.4in x 5.3in x 14in (188 x 135 x 356mm)
GPU Support	Dual-slot GPUs up to 12.8in (325mm)
Fans	Dual 120x15mm ultra-slim fans
PSU Compatibility	SFX / SFX-L
Front I/O	1x Type-C (10Gbps), 2x USB 3.0 (5Gbps)
Included Accessories	PCIe 3.0 riser cable, 1.5m DP 1.4 cable, steel handle, manual

Our Verdict

The L300 Mesh is a well-considered compact chassis that gives up little to larger towers when your priority is GPU performance in a tiny footprint. For builders who value portability, modern I/O, and the ability to fit a long dual-slot card, it represents strong value. Just be prepared for tighter cable management and to confirm PCIe Gen3 mode in BIOS when using the included riser.

Frequently Asked Questions

Will it fit an RTX 3060 or similar GPU?
Yes, it supports dual-slot GPUs up to 12.8in (325mm), which covers cards like the RTX 3060 and similar models.

What PSU size is required?
The case accepts SFX and SFX-L power supplies; ATX PSUs will not fit.

Does it come with a riser cable and display cable?
Yes, it includes a dual reverse PCIe 3.0 riser cable (set PCIe to Gen3 in BIOS for stability) and a 1.5m DisplayPort 1.4 cable.