Quidway AR 28 Series Routers Installation Manual
Chapter 2 System Specifications
Huawei Technologies Proprietary
2-3
Item
Description
Boot ROM
512 KB
SDRAM
128 MB
Flash memory
32 MB
Input
Rated voltage: 100 VAC to 240 VAC; 50 Hz to 60 Hz
Maximum tolerance: 90 VAC to 264 VAC; 47 Hz to 63 Hz
Input current: 0.5 A to 1 A
Power
supply
(external)
Output
Voltage: 12 VDC
Current: 4 A
Max. power
50 W
Physical dimensions
(H x W x D)
79.4 x 376.2 x 287.9 mm (3.1 x 14.8 x 11.3 in.)
Operating temperature 0°C to 40°C (32°F to 104°F)
Operating humidity
(noncondensing)
5% to 90%
Note:
SDRAM (synchronous dynamic random-access memory): As the primary memory,
stores data for communication with CPU during system operation.
Flash memory: As the primary file storage media, stores application programs,
anomaly information, configuration file.
Boot ROM: Stores Bootstrap program.
2.2 AR 28-10/28-11
2.2.1 Appearance
1) POWER
2) SYSTEM
3) SLOT1
4) SLOT2
5) SLOT3
6) WAN
7) LAN
Figure 2-3
Front view of the AR 28-10