Installing the Device
| 36 | 25 | 48 | 37 | | | | | | | | | | | | |
ETHERNET WORKGROUP SWITCH | | | | | | | | | | | | | | | |
| | | | | 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 | 44 | 48 |
| 12 | 1 | 24 | 13 | 3 | 7 | 11 | 15 | 19 | 23 | 27 | 31 | 35 | 39 | 43 | 47 |
| PWR | | | | 2 | 6 | 10 | 14 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46 |
2E253-49R | CPU | | | |
COM | | | | 1 | 5 | 9 | 13 | 17 | 21 | 25 | 29 | 33 | 37 | 41 | 45 |
| Screws | | | | | | | | | | | | | | |
Figure 3-4 Installing the Device in a Rack
3.3.3Connecting Power
The two power supplies in the 2E253-49R have automatic voltage sensing that allows connection to power sources ranging from 100–125 Vac, 2.5 A or 200–240 Vac, 1.25 A, 50/60 Hz.
To connect the 2E253-49R to the power sources, proceed as follows:
1.Plug each power cord into a grounded wall outlet, see Figure 3-5. To take advantage of the load sharing and redundancy capabilities, each power cord must be plugged into a separate dedicated ac outlet. The POWER (PWR) LED turns ON (green) and the CPU LED alternates between green and amber during boot up. It takes approximately one minute for the 2E253-49R to boot up.
If the power-up sequence is interrupted on this device, or if optional hardware has been installed or removed, this device may run an extended diagnostics sequence that may take up to five minutes to complete.