Penn Elcom 1U Half-Rack Shelf

The Penn Elcom R1194/1UHK is a half-width 1U shelf — a simple steel tray that lets you bolt a non-rackmount desktop device into a standard rack frame. Its job is translation: it takes something that was designed to sit on a desk, like a MOTU M2 or a compact USB hub, and gives it a legitimate home in your rack. On its own it fills half a rack unit horizontally, so it either pairs with another half-rack device on the same rail or gets balanced out with a blank half-rack panel on the other side.

At 200mm deep and 0.8kg, the shelf itself is light and shallow enough to fit in most touring and studio racks without crowding adjacent gear. It draws no power and takes no rack units of its own in this catalog's accounting, but practically speaking it occupies one full 1U row when combined with its partner panel or device — plan your rack layout accordingly. The shelf uses standard rack ears and mounts with your normal 10-32 or M6 hardware, so there's nothing exotic about the install. The device sitting on it is typically secured with hook-and-loop or double-sided foam tape, since most desktop gear has no rack ears of its own.

This shelf makes sense when you have a compact desktop interface or small utility device that genuinely needs to live in the rack but was never designed for it. It's a practical, cheap solution for a specific problem. If the gear you're trying to mount is full-width or has official rack-ear kits available, skip this and use those — a proper rackmount is always more secure for touring. Similarly, if you're stacking two of these side by side to fill 1U, make sure the combined weight of both devices stays reasonable, since the shelf is built for light desktop gear, not heavy units.