- Single-gang vs double-gang:
- “Gang” = the size of the electrical/low-voltage box opening. The faceplate must match the box.
- Single-gang: standard single-width opening (about 2 x 4 in in North America). Fits one device (switch, duplex outlet) or a keystone frame. Typically supports 1–6 keystone ports depending on the insert/plate.
- Double-gang: double-width opening (about 4 x 4 in). Fits two devices side-by-side or a larger keystone frame. Typically supports 2–12 keystone ports.
- Use single-gang when you need few ports and a smaller footprint; use double-gang when you need many ports or want more separation/room for cable bend radius.
- How many ports you need (general rules):
- One port per discrete connection (each Ethernet run, coax, phone, speaker, HDMI, etc.).
- Plan at least two Ethernet ports per location you expect a desk, TV, or access point. Add 1–2 spare ports where feasible; spares cost little during rough-in.
- Living room/AV: 4–8 Ethernet ports (TV, streamer, console(s), AVR, set-top, AP, future).
- Home office/workstation: 2–4 Ethernet ports (PC, phone/VoIP, printer, dock, AP).
- Bedrooms: 1–2 Ethernet ports.
- Access points: 1 Ethernet port each (PoE).
- Office/commercial standard: “dual drop” per workstation (2 data) plus optional voice; many spec 3–4 total.
- If mixing media (coax + Ethernet + HDMI), count each as a port; choose a plate that accommodates that total.
- If you’re near the limit of a single-gang’s capacity or have stiff cables (HDMI, coax), use a double-gang or split across two single-gangs.
- You can cap unused openings with blank inserts and populate later.