9900 Series - Layer 3 + Gigabit Ethernet switches
AT-9924T-XX	Layer 3 Switch with 24 ports of 10/100/1000Base-T with 4 SFP slots (unpopulated)
AT-9924T/4SP-A-XX	24 x 10/100/1000BT Plus 4 SFP Slots Advanced L3 Switch
AT-9924T/4SP-P-XX	24 x 10/100/1000BT Plus 4 SFP Slots Advanced L3 Switch (Inc IPv6 Accelerator Card)
AT-9924SP-XX	Layer 3 Switch with 24 SFP slots (unpopulated)
AT-9924T/s	24x10/100/1000T + 2 x20 Gigabit expansoin bays
AT-9924T/s optional modules
AT-A60	1x10GbE (XFP)
AT-A61	12x1000Base-X SFP ports
AT-A62	12x1000Base-T RJ-45 ports
AlliedWare options for AT-9900 series
AT-9924ADVL3UPGRD-00	AT-9900 Advanced Layer 3 Upgrade: IPv6, BGP-4
AT-9924FL3UPGRD-00	Full Layer 3 upgrade: RSVP, DVMRP, VRRP, PIM SM, PIM DM
AT-AR-VLANDTAG-00	AT-9924 VLAN double tagging (Q-in-Q / Nested VLANs) upgrade license