Installation guide

Overview
1-2 Introduction
• 1000BASE‐TRJ45connectorswhichcanbeusedinastackconfigurationoras
standardswitchportswhentheA2H123‐24isconfiguredasastandaloneswitch.
Ontherearpanel,thereisaRedundantPowerSupplyconnectorforaconnectiontoa
SecureStackC2RPS‐SYSpowersupplysystemusingthe
appropriatecable(C2RPS‐PSM
cable).
The10/100Mbpsfi xedfrontpanelportscanoperateineitherhalf‐duplexorfull‐duplex
mode,asdeterminedbyAuto‐Negotiation.
Figure 1-1 A2H123-24 Stackable Switch
Caution: The A2H123-24 is not a PoE-compliant device. Do not connect a SecureStack
PoE Redundant Power System (C2RPS-POE) to the power connector. Otherwise,
damage to the device may result.
Precaución: El dispositivo A2H123-24 no cumple con el estándar PoE (power over
ethernet). No conecte una fuente de poder redundante (RPS) SecureStack PoE (C2RPS-
POE) al cable de corriente. De lo contrario, el dispositivo puede dañarse.
Note: The 1000BASE-T built-in RJ45 stacking ports 25 and 26 on the A2H123-24 can be
configured as standard 10/100/1000BASE-T switch ports, using the command set switch
stackport, when the unit is used in standalone mode.
1 DB9 RS232 Console port connector 6 Stack and LC fiber-optic port status LEDs
2 Recessed password reset button 7 RJ45 ports for stack connections
3 Stack Unit status LED
S 8 LC connector, 100BASE-FX ports
4 RJ45 port status LED
S 9 C2RPS-SYS connection
5 RJ45, 10/100 Mbps ports 10 AC power input connector
A2H123-24