StarTech RK2433BKM 24U 4-Post Server Cabinet Review

The RK2433BKM is a 24U, 19-inch enclosed four-post floor-standing cabinet, EIA/ECA-310-E compliant, with square holes for cage nuts and an L-shaped rail profile. It arrives fully assembled, so there is no flat-pack build and no box of panels to sort through before your gear goes in.

The box holds the cabinet, a 1U fixed shelf, a 3-meter roll of hook-and-loop cable tie, 100 M6 cage nuts and 100 M6 screws, two door and panel keys, casters and leveling feet. The cage nut count is about 100: the manufacturer lists 100 of each, and some resellers list 96.

Outside, the cabinet measures 23.6 in wide, 48.7 in tall with casters and 30 in deep, and it weighs about 130 lb (59 kg) empty. The front door, rear door and both side panels are steel mesh and key-locked. The doors are reversible and removable, and the side panels come off on independent quick-release locks. A vented top panel with square cage-nut-compatible holes, cable entry cutouts with covers in the ceiling and floor, and grounding lugs round out the shell. The warranty runs 5 years, with free lifetime 24/5 multilingual technical assistance.

Three different depth numbers matter, and mixing them up is how buyers end up with a server that keeps the door from closing. The adjustable mounting depth is 2 in to 30 in, the range the front and rear rails can be set to, measured from the front rail face to the rear rail face. The enclosure depth is 30 in, the external figure your closet or floor space has to take. Usable space inside the doors is what limits cable bend radius behind the deepest device.

A standard-depth rack server fits with room to spare. A full-depth 4U storage chassis is the case where this cabinet runs out of depth, and a deeper cabinet is the right answer there.

Shallow gear is easy: 1U switches, patch panels and AV equipment sit fine once the rails move forward. One owner on a forum reports moving the rails one notch to gain depth and still fitting standard rails, 1U shelves and rear cable pass-throughs.

Mesh on the front, rear and both sides gives strong passive airflow and suits front-to-back server airflow well, which is a real advantage over cabinets with solid side panels. Heat escapes through the vented top panel too.

No fans are included. The cabinet has provisions for four optional 4.7 in (120 mm) fans, so treat that as something to plan for rather than a cooling solution you already own. A 24U cabinet full of gear in a closed closet will need active airflow.

It is not a quiet cabinet. Mesh on all four sides and no sound dampening mean it belongs in a closet, a utility room, a garage or a dedicated office, not a bedroom or a shared living space. One specialist review mentions noise insulation as the weak point.

At 130 lb empty, with a higher shipping weight, the cabinet arrives on a pallet by freight. Plan for two people and a clear path: this is not a parcel you carry up the stairs alone. One specialist review notes it arrives fully assembled on a pallet, screwed down and heavily wrapped, so it travels well. Leveling feet are included for a stationary install.

Two separate key sets come with it, one for the doors and one for the side panels. One specialist review notes the fasteners are the weak point: the screws are sized to the shelf holes, so you thread into the hole before reaching the nut, which can damage the thread, and some column screws can spin.

One owner on a forum reports replacement keys are hard to source: they acquired a rack secondhand with no keys, and the manufacturer no longer stocks replacements. Keep both key sets safe. The cable entry cutouts are large and screwed from the outside, so they can be opened without a key, a minor security consideration for a cabinet chosen partly for its locks. The included 1U shelf is shallow, fine for a switch or tools but not for a deep device.

The same cabinet family comes in an 18U version (RK1833BKM) and a 12U version (RK1233BKM), both floor-standing, 29 in deep, alloy steel with mesh panels and rated for a 992 lb capacity. The 18U stands 35.6 in high and the 12U 23.6 in high, and the 12U is 25.1 in wide. Choose the 18U or 12U for a home lab, network closet or AV rack where 24U of height is more than you need, and the 24U when you need the full 24U of rack space.