1U rack mount for 4 × Raspberry Pi 5 (also Pi 4 B / 3 B+) with placeholder device

Homelab & Rack

1U rack mount for 4 × Raspberry Pi 5 (also Pi 4 B / 3 B+) – 10″ and 19″

1U insert for 4 × Raspberry Pi 5 (also Pi 4 B / 3 B+) (85 × 56 × 17.6 mm). One carrier, ears for 10″ and 19″ racks included. No supports, PETG or ASA.

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€4.90incl. VAT

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Licence: use and print for yourself; do not share or sell the files or printed parts. Licence terms · Print commercially or subscribe? Register interest

Description

Rack insert, 1 unit high, for 4 × Raspberry Pi 5 (also Pi 4 B / 3 B+). The device carrier is the same for 10-inch and 19-inch racks; only the ears change. Both pairs of ears are in the download.

  • Four boards in 2 × 2: two front boards with Ethernet/USB through the front windows, two rear boards with ports facing back.
  • 5 mm standoffs for M2.5 screws; room for heatsinks or the Active Cooler.
  • 40 mm lane in the middle for USB-C plugs and cables, slotted floor for air.
  • Ears with slots: 10″ for 234.0–239.5 mm hole spacing (there is no standard for 10″ racks), 19″ for 465.1 ± 1 mm. Fits #10-32, M5 and M6.
  • Carrier–ear joint: 2 × M3 countersunk per side with a nut in a pocket, plus tongue and groove so the fronts sit flush.
  • Rear support for 4-post racks: screw two support brackets (left and right are the same file) to the rear rails; their rib slides into the groove at the rear end of the carrier. For 10″ short (carrier end to rear rail 1–64 mm) and long (1–124 mm), for 19″ one length (1–124 mm). The carrier is 194 mm deep.
  • 19″ ears in two versions: with stiffening beam (also in 2-post racks) or light without the beam (only together with the rear brackets).

Load: without rear support (2-post rack) 1 kg at most, with rear support (4-post rack) 2 kg per insert at most. Both are guide values, not a tested load rating. The weight depends on what you fit; above 1 kg only with rear support.

Dimensions: board 85 × 56 × 17.6 mm (W × D × H). Dimensions taken from Raspberry Pi, Pi 5 mechanical drawing (hole pattern 58 × 49 mm); port heights from the Pi 4 drawing; our part has not been tested on the device yet. 0.5 mm clearance per side. Print the free rack fit test part first if you are unsure about your rack or printer.

Fits 4 × Raspberry Pi 5 (also Pi 4 B / 3 B+); not an accessory by the device's manufacturer and not affiliated with it.

Hole pattern per the manufacturer drawing; front windows are generous (54 × 20 mm) because the Pi 5 port positions were not measured.

Dimensions

Width210 mm
Height194 mm
Depth44 mm
Weight (printed)95 g
Layer height0.2 mm
Walls3
Infill15 %

Dimensions of the default variant in print orientation.

Material and temperature

Mini PCs often run around the clock and get warm: PETG or ASA cope with that, PLA deforms over time. Do not block the device's vents.

Print orientation: Carrier: front face down. Ears: upright, as the files are laid out. Support brackets: lying on their rear plate.

Safety notice

Without rear support (2-post rack) 1 kg at most, with rear support 2 kg per insert at most (guide values, not a tested load rating). Keep the device's vents free and do not pinch cables. The part only holds the device and carries no current itself. Holders for devices, not an electrical component: do not install or modify anything carrying mains voltage in or on them. 2 kg per rack mount at most (guide value, not a tested load rating); from 1 kg, support the device at the back as well. Print in PETG or ASA because of the constant warmth and keep the device's ventilation free.

Not an original part. No affiliation with the vehicle or device manufacturers named; make and model names only indicate fitment.

What's included

You get one ZIP with:

  • STL – print-ready mesh
  • 3MF – with print profile
  • STEP – editable in CAD

You will also need

  • 4 × M3×10 countersunk screw (ISO 10642)
  • 4 × M3 nut (ISO 4032)
  • 4 × Your rack's screw (#10-32, M5 or M6) with a washer
  • 4 × More rack screws with washers for the support brackets (4-post racks only)
  • 16 × M2.5×6 screw (straight into the 2.2 mm holes of the standoffs)

Printing

  1. Print the carrier front face down, the ears upright as the files are laid out. PETG or ASA, 0.2 mm layers, 3 walls, 15 % infill, no supports.
  2. Print the ear for your rack (10″ or 19″) twice; the left ear is the right one turned upside down.
  3. 4-post rack: print the matching support bracket twice, lying on its rear plate as the file is laid out; left and right are the same file.

Installation

  1. Press the M3 nuts into the pockets of the carrier's end walls from inside.
  2. Fit the ears (tongue into groove) and fasten each with 2 × M3×10 countersunk screws.
  3. Screw each board onto the standoffs with 4 × M2.5×6, the front ones with the ports toward the window.
  4. 4-post racks only: loosely screw both support brackets to the rear rails, in the same rack unit as the insert (the lower one for 2U), ribs facing in.
  5. Slide the insert in from the front (the grooves at the carrier's end slide onto the ribs) and screw it in with rack screws and washers.
  6. Push the support brackets sideways against the carrier and tighten them, then slide the device in.

FAQ

Which material should I use for this rack mount?

Recommended: PETG (alternatively ASA). Mini PCs often run around the clock and get warm: PETG or ASA cope with that, PLA deforms over time. Do not block the device's vents.

Do I receive a printed part?

No. You get the print files and print the part yourself or use a print service. You get the download link right after payment.

Does it fit my 10-inch rack?

The 10″ ears have slots for 234.0 to 239.5 mm hole spacing (centre to centre) and are 253 mm wide; the ear flanges need 218 mm clear width between the rails. We found 221–222 mm on 10″ racks. Usable depth: see dimensions.

Which material?

PETG or ASA. No PLA: devices run warm around the clock in a rack and PLA creeps over time.

Do I need the rear support?

Above 1 kg device weight, yes. It needs rear rails (4-post rack); in a 2-post rack the limit is 1 kg. With support the limit is 2 kg per insert. Both are guide values, not a tested load rating. Use the light 19″ ears without beam only with the rear support.

Which support bracket fits my rack?

Measure from the rear end of the carrier to the front face of the rear rail. Up to 64 mm the short 10″ bracket fits (front and rear rails at least 120 mm apart), up to 124 mm the long one (at least 180 mm). The 19″ bracket reaches 124 mm (at least 180 mm). If the rear rails sit further back, move them forward if your rack allows it, or use a rack shelf.

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    Version 3.0.0, updated 3 November 2026 · SKU HL-RPI5-4X-1U

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