We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black metal 1U rack shelf, nineteen inches wide, three adapter slots, pull-out tray visible

Black Box Corporation

Black Box Corporation JPM427A-R2 rackmount NAS 1U 19" 3-slot adapter

SKU CH-9DQS-39WSG MPN JPM427A-R2

A 1U rack-mountable fiber enclosure with a pull-out tray and three adapter slots for patch-panel applications

  • 1U rack height fits dense server cabinets
  • 19-inch width matches standard EIA racks
  • 8-inch depth suits shallow enclosures
  • Pull-out tray eases fibre cable management
  • TAA compliant for government procurement

Rackmount 1U fibre enclosure

The Black Box Corporation JPM427A-R2 is a 1U rackmount fibre enclosure designed for patch panel applications. It fits a standard 19 inch rack and provides three adapter slots for flexible connectivity. The unit includes a pull-out tray for easier access to installed modules. It is built for professional network infrastructure deployments.

Three-slot adapter limitation

The enclosure accepts a maximum of three adapter modules, which defines the port density available in a single 1U space. Installers must plan fibre counts around this fixed slot limit. The non-locking design allows quick module changes but does not secure adapters against accidental removal. Cable management relies on the supplied ties, organisers and distribution rings.

TAA-compliant for government use

This model carries Trade Agreements Act compliance and a GSA schedule reference, making it eligible for federal procurement. The 45-day supply indication supports contractual delivery requirements. Buyers without TAA mandates do not gain a functional advantage from this certification.

Highlights

  • 1U rack height fits dense server cabinets
  • 19-inch width matches standard EIA racks
  • 8-inch depth suits shallow enclosures
  • Pull-out tray eases fibre cable management
  • TAA compliant for government procurement

Specifications

BrandBLACK BOX
Shipping weight5.90 kg
Package size554 × 437 × 107 mm

Questions about this item

Should I pick the 1U 19-inch three-slot version or a different height?

The unit is a 1U rack-mount shelf that fits a standard 19-inch rack and provides three adapter slots; choose it when you need exactly one rack unit of height.

What does the 10.8-inch depth mean once the shelf is installed in my rack?

At 10.8 inches deep the shelf sits well within most standard racks, leaving ample rear clearance for cable routing and the included pull-out tray.

How do the 10-32 and 12-24 cuphead screws work with my rack rails?

Both 10-32 and 12-24 cuphead screws are supplied so you can mount the shelf on either thread pattern without extra hardware.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.