Allied Telesis AT-9448Ts/XP (Basic Layer 3) - Manual (Page 27)

AT-9400 Series Gigabit Ethernet Switches Installation Guide
27
GBIC Transceiver Slots
For interconnecting devices over large distances using fiber optic cable,
the AT-9424T/GB Switch has two slots on the front panel labeled 23 and
24 for optional fiber optic Gigabit Interface Converter (GBIC) Ethernet
transceivers. Figure 10 illustrates a GBIC transceiver.
Figure 10 GBIC Transceiver
GBIC transceiver slots 23 and 24 are paired with twisted pair ports 23R
and 24R. Only one port or transceiver in a pair can be operational at a time
and a link on a transceiver port takes priority over a link on a twisted pair
port. For further information, refer to “Redundant Twisted Pair Ports” on
page 30.
Note
For a list of supported GBIC transceivers, contact your Allied Telesis
sales representative.