In case anyone was wondering, they work well with OpenBSD, they show up as em nics.
em0 at pci5 dev 7 function 0 "Intel PRO/1000MT (82546EB)" rev 0x01: apic 7 int 2 (irq 11), address 00:11:0a:5c:6b:04 em1 at pci5 dev 7 function 1 "Intel PRO/1000MT (82546EB)" rev 0x01: apic 7 int 3 (irq 5), address 00:11:0a:5c:6b:05 em2 at pci5 dev 8 function 0 "Intel PRO/1000 (82542)" rev 0x02: apic 7 int 0 (irq 7), address 00:90:27:c2:2a:a6
