If you're interested in the PC Engines APU2 line and what the differences are between models, I've covered it in a previous post here. I recently purchased a new PC Engines APU2E4 to use as a home router. I purchased the kit, which includes the board, case, and power supply from CorpShadow. I also ordered the DB9F to USB adapter (Silicon Labs CP2104), so I don't need to get a separate null modem connector.

I've been looking at the PC Engines APU line for a while. They're a line of medium size single board PCs with a DB9 serial connector, no VGA output, and multiple gigabit Ethernet ports. Because of this they're often used as firewall machines. I want to get one and use it as either the home router, or an experimental server to mess around with. Quite a few OpenBSD folks use them and recommend them as OpenBSD router and server hardware.