Corsair FRAME 4000X RS / Lian Li O11 Air Mini

Corsair FRAME 4000X RS: CC-9011302-WW · black · standard RS120 fans

Lian Li O11 Air Mini: O11 Air Mini (2021); black O11AMX and white O11AMW. The O11 Dynamic Mini, O11D Mini V2 Flow and full-size O11 Dynamic are separate cases.

Specification	Corsair FRAME 4000X RS	Lian Li O11 Air Mini
Release year	2026	2021
Announcement and availability	7 April 2026; immediately available at announcement Corsair	—
Case type	Mid-tower; steel, tempered glass, plastic Corsair	—
Motherboard support	Mini-ITX, Micro-ATX, ATX; E-ATX up to 305 × 277 mm Corsair	—
Back-connect motherboard support	Supported Corsair	—
Graphics card clearance	405 mm with 25 mm front fans; nominal 430 mm without front fans Corsair	—
CPU cooler height	Up to 170 mm Corsair	—
Power supply	ATX; up to 220 mm long Corsair	—
Included fans	4 × RS120 PWM; unlit Corsair	2 × 140 mm PWM at the front, 1 × 120 mm PWM at the rear PWM fans adjust their speed to temperature using a signal from the motherboard. Lian Li
Front panel	RGB Flow; 64 LEDs; 5 V ARGB Corsair	—
Front I/O	20 Gbit/s USB-C; 2 × 5 Gbit/s USB-A; combined headphone/microphone Corsair	2 × USB 3.0, 1 × USB 3.1 Type-C, 1 × HD Audio The Type-C port needs a matching front-panel USB-C header on the motherboard. Lian Li
Controls	Power button; no reset switch or drive activity LED Corsair	—
Front/top fan rails	Front fans up to 200 mm; top fans up to 140 mm Corsair	—
Radiator mounts	Front/top/side: 240, 280 or 360 mm; rear: 120 or 140 mm Corsair	—
SATA drive bracket	2 × 2.5-inch SSDs or 1 × 3.5-inch HDD Corsair	—
Cable clearance	37 mm behind the motherboard Corsair	—
Dust filters	Front, side and bottom Corsair	—
Vertical GPU mounting	Rotatable PCIe bracket; riser cable separate Corsair	—
iCUE LINK lighting	Separate RGB adapter, compatible LINK hub and iCUE 5 required Motherboard ARGB software is a separate control option. Corsair	—
Size and materials	—	400 (D) × 288 (W) × 384 (H) mm; 4 mm aluminium panel, 0.8 mm mesh panel, 4 mm tempered glass The mesh pattern on the front, top and side is designed to let fans draw air straight from outside. Lian Li
Motherboard	—	E-ATX (up to 280 mm wide), ATX, Micro-ATX, Mini-ITX The 7-slot back panel is for ATX, Micro-ATX and ITX; the 5-slot back panel is for Micro-ATX and ITX. Both are included. Lian Li
Graphics card and vertical mounting	—	Up to 362 mm long; 7 or 5 expansion slots; vertical GPU support (top or bottom mode) With the vertical GPU bracket in top mode, two 120 mm fans can be fitted under the card; in bottom mode there is no room for them. Lian Li
CPU cooler and power supply	—	CPU cooler up to 170 mm; ATX power supply up to 200 mm Lian Li
Fan support	—	Top 3 × 120 / 2 × 140 mm; side 2 × 120 mm; bottom 2 × 120 / 2 × 140 mm; front 2 × 120 / 2 × 140 mm; rear 1 × 120 mm Lian Li
Radiator support	—	Top 240 or 280 mm; side 240 mm; bottom 240 or 280 mm; front 240 or 280 mm When fitting a 240 mm radiator at the top with an ATX board, an offset bracket is used to avoid clashing with memory modules. Lian Li
Storage	—	6 × 2.5-inch SSD or 3 × 2.5-inch SSD + 3 × 3.5-inch HDD Drives mount in the chamber behind the motherboard tray. Lian Li
Dust filter	—	1 × removable bottom dust tray Lian Li