Electronics Enclosure Base with Display Panel Lip and USB Shroud

Create a rectangular electronics enclosure base (an open-backed tray) that is 193.6 mm wide (X), 134.6 mm deep (Y), and 27.5 mm tall (Z), with 2.4 mm walls. The front face (bottom, at Z=0) is a solid 2.6 mm thick plate. Cut a rectangular through-window 163.2 mm by 97.92 mm, centered, through this front plate. Directly behind the window, on the inside, cut a shallow rectangular recess 170.8 mm by 111.8 mm and 1.8 mm deep, centered, so a flat display panel drops into the recess and is retained by the lip left around the smaller window. The interior is hollow from behind. In each of the four inside corners add a vertical cylindrical boss 7 mm in diameter running from the recess up to 2.4 mm below the top rim, each with a 2.5 mm diameter hole down its center for a screw. On one long side wall cut a large rectangular opening 52 mm wide (along Y) and 15 mm tall (in Z), centered 11.6 mm above the front face, for USB and Ethernet ports. On the adjacent short side wall cut three rectangular openings, each about 15 mm wide and 15 mm tall centered 11.6 mm above the front face, for power, HDMI, and audio connectors. On the outside of the USB/Ethernet wall, add an open-topped U-shaped channel (a shroud) that extends 75 mm outward: it has a floor and two side walls 2.4 mm thick, an internal width of 29.5 mm and internal height of 15 mm, open at the top and open at the far end, aligned with the port opening, to hold a USB WiFi dongle with its antenna sticking out. Round the outer vertical edges of the enclosure with a 3 mm radius.

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