My APU2 died few years back and haven't found a decent replacement. Instead I use a Lenovo Thinkstation M720Q off eBay with the PCIe x8 riser and Intel 2 port 1

My APU2 died few years back and haven't found a decent replacement. Instead I use a Lenovo Thinkstation M720Q off eBay with the PCIe x8 riser and Intel 2 port 10GbE card. You could also fit a 4 port 1Gb card too. The thing idles at 18-19W which is less than the big white rectangular Verizon "trash can" router which idled at 22W and has horrible WiFi (I use a Unifi APLR.)