... 11a, IEEE 802.11d, IEEE 802.11g, X.509, IEEE 802.11h, IEEE 802.11nExpansion ... 1 (free) x Expansion Slot ¦ 2 (total) / 2 (free) x SFP (mini-GBIC)Interfaces1 x management - console - 9 pin ... D-Sub (DB-9) ¦ 1 x management - Ethernet ... 10Base-T/100Base-TX - RJ-45 ¦ 1 x ...